You observe a population of Island Sparrows for which the phenotype of crown color varies from yellow to white. You perform two experiments. Experiment 1 shows that this variation in the phenotype affects mating success, so that birds with yellow crown colors have more offspring. Experiment 2 shows that this variation in phenotype is determined fully by the diet of the birds and not genetics. Can crown color evolve via natural selection in this population of Island Sparrows?

Answers

Answer 1

Answer:

Yes, the color of the crown evolves by the process of natural selection.

Explanation:

Based on experiment 1 mentioned in the question, it is clear that the sparrows with the yellow crown are demonstrating reproductive success, and based on experiment 2, it is demonstrated that the origination of crown color is solely dependent upon the diet consumed by the sparrows, not on the genes.  

The yellow crown sparrows exhibit enhanced skills in locating food, finding food or prey is dependent upon the factors like skills of hunting, vision, the musculature of the body, and other things, and all these are partially or completely determined by genetics. This yellow crown sparrow will further pass on their genes to their offspring, which will further provide them good skills of locating food, and thus, will obtain the diet needed for proper growth. These offspring will further pass on the traits to the future generations, and so on.  

On the other hand, the sparrows exhibiting white crown seem to be less efficient in locating their food, and they are also generating fewer offspring that exhibit the same lack of food locating skills like their parents. Due to less tendency of finding food, the sparrows with the white crown will suffer from poor diet and thus, will further generate less offspring, and so on.  

Therefore, it is clear that for betterment, the sparrows with the yellow crown will evolve further due to their better skills of locating food, and this gives rise to the phenomenon of natural selection.  


Related Questions

Determine whether each activity impacts land resources in a positive or negative way. Drag each term to the correct
category.
desertification
Positive Impacts
Negative impacts
reforestation
laws and regulation
habitat restoration
erosion
urbanization
deforestation​

Answers

Answer:

desertification - negative impacts

Reforestation - positive impacts

laws and regulation - positive/negative impacts

habitat restoration - positive impacts

erosion - negative impacts

Urbanization - negative impacts

deforestation - negative impacts

Explanation:

Desertification is a process in which productive lands become a dry, unproductive one as a result of humans or natural activities such as drought, deforestation, etc. It impacts land resources negatively in that land generally becomes unproductive and unsupportive to other lives.

Reforestation is a process of artificially creating forest where one has been removed or where none existed before. It involves the planting of trees and leads to the creation of new land resources such as habitats, water sheds, etc.

Laws and regulations can impact land resources either positively or negatively depending on the type of laws. Laws that promote land conservation positively impact land resources while those that promote the wanton use of lands negative impact land resources.

Habitat restoration refers to activities geared towards restoring habitats of organisms that have been degraded by human or natural activities. Habitat restoration positively impacts land resources as natural processes are directly impacted positively.

Erosion involves the removal of topmost layer of soils by running water or wind. It negatively impacts land resources by rendering land unproductive impacting the protective nature of soil on other resources such as watershed, etc.

Urbanization refers to the process of actively developing an area vis a vis the construction of more buildings and other infrastructures to make a place more urban. Land resources are negatively impacted in the process as most often requires the conversion of lands to non-forested uses.

Deforestation is the removal of forest layers for non-forest uses. It negatively impacts land resources such as habitat removal, lower biological diversity, protection of water sheds etc.

Answer:

Here

Explanation:

When a plant generates food through photosynthesis, this food
A.
is always used as soon as it is converted into a form the plant can use.
OB
can be used immediately or stored for later use.
C.
can cause the plant to gain excess layers of fat.
OD
is stored for a short period of time, usually about three weeks,

Answers

Answer:

B:because plant will make the food,store it,or eat it.usually the plant will stored the food for the winter,because of the soil being frozen and barely any sunlight,it will make it hard for the plant to make more food during photosynthesis,sometimes the plants will die but come back when it is springtime.Once food is made it is used or saved for later use for energy.

Answer:

can be used immediately or stored for later use.

Explanation:

Energy generated through photosynthesis can be used immediately or stored for later use depending on the needs of the plant in its environment.

Sometimes, a plant needs to immediately put this energy into growing new branches or leaves. Other times, such as when a cold winter is approaching, it might be better for the plant to store the energy for later use

when a cell's cytoplasm divides
A. cytokinesis
B.mitosis
C. interphase

Answers

Answer:

cytokinesis

Explanation:

sorry if wrong

3. Which of the following are NOT types of microorganisms?
a. Prions
b. Viruses
c. Bacteria
d. Earthworms

Answers

Answer:

d. Earthworms

Explanation:

Think about it: have you ever actually seen a prion, virus, or bacterium? No, because they can't be seen with the naked eye. Microorganism means that it's too small (hence the prefix micro-) to see.

Prions are little misfolded proteins. Viruses are nonliving things made up of a protein and nucleic acid. Bacteria are little prokaryotic microorganisms.

Which is the best example of a response to an external stimulus

Answers

Explanation:

2 Another example of external stimulus is temperature. When it is cold outside, your response is to get warm by putting on a jacket. If there is an external stimulus, there must also be an internal. An internal stimulus is a stimulus that comes from inside an organism.

Meiosis reduces the chromosome number by

Answers

Answer:

i believe it's half and produces four gamete cells

Explanation:

From diploid to haploid so by HALF

They convert energy from the Sun into usable chemical energy by the process of photosynthesis. They are

producers

primary consumers

decomposers

Answers

Answer: Producers

Explanation: Producers are autotroph, which means they make their own food, like plants.

Answer:

producers

Explanation:

18. Some groups of organisms work together to stay safe or to take down prey. What do we
call this?

Answers

Answer: Mutualistic.

Explanation:

Help with the picture

Answers

Bleaching I believe is the correct answer.

Which resource is found in large quantities in China and is also imported into China from other countries?


tungsten


pearls


coal


timber

Answers

Answer:

Coal

Explanation:

China fulfills its demand for coal by purchasing it from regional neighbors. In 2017, its coal imports mainly came from Australia (79.9 million tons), Indonesia (35.2 million tons), Mongolia (33.5 million tons), and Russia (25.3 million tons).

Hope this helps

Have a great day!

2.In what way is the plant’s vascular system like ours?



3.How have scientist classified all plants?


4.Give 2 examples of non-vascular plants. (This will take a little extra research.)


5.List the 2 major vascular tissues of a plant and tell what they do.

1.


2.

6.List the reactants and products of photosynthesis?


Reactants:


Products:


7.Both plant and animal cells have organelles. What are organelles?



8.Which organelle is responsible for photosynthesis?



9.Why is it incorrect to say plants “breathe” Carbon dioxide (CO2)?

10.Where would you expect to find plant cell with a high number of chloroplast?



11.What are the stomata and why are they important to the plant?



12.What is the job of the guard cells?



13.The venus fly trap or the pitcher plant are still considered plants. Why do they “eat” insects?



14 Your friend thinks mistletoe is normal plant. How could you explain why it is NOT considered a “normal” plant?

Answers

Answer:

2.The human circular system does pretty much the

same thing as a plant but the plant can also reproduce oxygen. The

human needs air so does a plant to live and make more air. The

human needs food so does a plant to stay healthy. The human needs

to drink water to live too so does the plant to stay alive

otherwise it will rot and fall apart.

Explanation:

A lot of echinoderms are named after flowers true or false

Answers

Answer:

False, it is only represented by one class: Crinoidea (sea lilies).

Explanation:

Echinoderms (phylum Echinodermata) are marine organisms that comprises more than 6,000 species. These animals are deuterostomes that are differentiated to have an ambulacral  vascular system and a pentameric symmetry. Echinoderms are divided in the following classes: 1- Ophiuroidea (snake stars), 2-Asteroidea (sea stars), 3-Crinoidea (sea lilies), 4-Holothuroidea (sea cucumbers) and 5-Echinoidea (sea urchins), which can be easily distinguished  by anatomical and ecological characteristics.

If the bubbles given off by the plants were collected and tested, the gas present would MOST likely be

(A) oxygen
(B) hydrogen
(C) nitrogen
(D) carbon dioxide ​

Answers

Answer: D

Explanation: To prove that oxygen is a by-product of photosynthesis, you can set up an experiment with an aquatic plant and capture the gas it emits in response to photosynthesis.

The outermost cells of the skin die and slough off because

Answers

Answer:

Explanation:

The keratinocytes: cells found in the outermost layer of the epidermis that produces fibrous protein which gives hair, nails, and skin their hardness and water-resistant properties dies as a result of their distance from the rich blood supply the cells of the next layer lie on top off. Due to less nutrients and oxygen, these cells die as they are pushed towards the surface of our skin.

g What basic characteristics do we generally expect to find in all things that qualify as being alive? Question 1 options: 1) an ability to: reason, make polymers and repair damage. 2) an ability to: reproduce, respond to stimuli and repair damage. 3) an ability to: avoid pain, move from one place to another and evolve. 4) an ability to: capture energy from sun light, move from one place to another and reshape its environment. 5) an ability to be more ordered than their surroundings, respond to stimuli, and capture energy from sunlight.

Answers

Answer:

Number 2: an ability to: reproduce, respond to stimuli and repair damage.

Explanation:

Some basic characteristics of all living things in general which they all have in common include:

The ability to reproduce (reproduction). All living things reproduce...

Ability to respond to stimuli (irritability)

Ability to repair damage: this is involved with cells in the organisms and to stay alive all organismsin general areade up of cells which has the ability to be repaired if damaged.

75 POINTS!!! One reason male peacocks spread their tail feathers is to attract a mate. How does choosing a male with a bright, full tail increase a peahen’s chance of producing healthy peachicks?

Answers

Answer:

They have greater health conditions

Explanation:

if they are bright, they are healthy

Answer:

Typically, if a peacock has a bright tail with many feathers and eyespots, a female will choose him. These tail features indicate that the peacock may be healthier than other males and, therefore, produce healthier peachicks.

Explanation:

This is the sample response.

True or False. A cyclone, typhoon and hurricane are all the same type of storm.
*

Answers

Answer:

True!

Explanation:

They are the same meaning, but said in different locations.

Answer:

true

Explanation:

they are all the same thing just different names depending on where or how powerful it is

ATP is formed from the breakdown of glucose in _____(1)_____, while glucose is formed from solar energy in _____(2)_____.

Answers

Answer:

(1) cellular respiration, (2) photosynthesis

Explanation:

Which of the following statements about oxidative phosphorylation by ATP synthase is FALSE? A) The electrochemical gradient across the inner mitochondrial membrane generated by electron flow is used to synthesize ATP. B) Uncouplers dissipate the electrochemical gradient but electron transport continues without ATP production. C) Inhibitors disrupt electron flow as well as ATP synthesis. D) A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP. E) ATP synthesis occurs via simultaneous conformational changes in protein subunits containing catalytic sites.

Answers

Answer

D)A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP

Explanation:

Oxidative phosphorylation reffers to metabolic pathway whereby enzyme is used by the cell to achieve nutrient oxidation, so that chemical energy of molecular oxygen is released as a result of this, adenosine triphosphate (ATP) is manufactured. oxidative phosphorylation is seen in all organisms that are aerobic in nature and it occur in the mitochondria of all eukaryotic organisms. There is electron transfer during oxidative phosphorylation, the electrons moves from the donor to the receptor and this is known as redox reaction, as a result of this energy is released, and this energy is used for formation of ATP.

Therefore,among all the options, A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP is the false statement.

In the conifer forest just below the alpine zone of a mountain top, two closely related species of birds that feed on small flying insects have been living together for millions of years. A local naturalist notices that the beak sizes differ on the two birds. The species that eats mosquitoes has a small delicate beak, and the species that eats robber flies (bigger than mosquitoes) has a very large beak. By accident, the naturalist stumbles upon a fossilized bird on the mountain that looks like it could be the ancestor of both species except its beak is neither small nor large, but intermediate in size. What principle could be at work in shaping the beaks of these birds? a. competition b. ecological niche development c. coevolution d. character displacement e. all of the above

Answers

Answer: d. character displacement

Explanation:

Character Displacement this is an evolutionary divergence which usually occurs when two similar species inhabit the same environment. This circumstance occurs where differences among similar species whose circulation in an environment overlap geographically are feature in regions where the species co-occur, but tend to be minimized or lost where the species' circulations do not overlap. Which is same case as that of the birds.

which species is the banana most closely related to?
lemon
onion
radish
seaweed

Answers

Answer:

onion

Explanation:

"Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both monocots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics. "

Answer:

Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both mono cots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics.

Hope this helps!

Please give as brainliest answer!!

Thanks!

Explanation:

Insulin is a hormone that travels through the blood and helps regulate blood sugar levels. Which best describes how insulin travels in the blood?
in the plasma
in the platelets
attached to the white blood cells
attached to the red blood cells

Answers

Answer:

A:in the plasma

Explanation:

Insulin regulates blood sugar levels and it travels in the plasma. Therefore option A is correct.

What is insulin?

Insulin is a hormone that is released by β-cells of the pancreas. It controls the amount of glucose in our bodies. It converts glucose into glycogen and then this glycogen is stored in the liver, and whenever the glucose level reduces in the blood, then this stored glycogen is converted into glucose. It also helps in breaking fat and protein for energy.

Insulin is a very important hormone for the regulation of glucose in the blood. A deficiency of insulin occurs when the immune system attacks islets and it causes diabetes, in this disease blood sugar level increases

.

Insulin flows in the blood through plasma. Therefore, option A is correct.

Learn more about insulin, here:

https://brainly.com/question/3109138

#SPJ2

Recessive sex-linked traits such as color blindness appear more frequently in
males because

A. males inherit only one sex chromosome.
B. males inherit two copies of every sex-linked allele.
C. sex-linked alleles are carried only on Y chromosomes.
D. males inherit only one sex-linked allele.

Answers

The answer is D

Explanation: In humans, recessive sex-linked traits generally occur on the X chromosome. Since males are (XY), they will inherit only one sex-linked allele on their X chromosome.

Hope that helps! :)

new biology question pls help

Answers

Answer:

it should be natural selection but im not too sure...

Explanation:

Answer:

The theory of natural selection was explored by 19th-century naturalist Charles Darwin. Natural selection explains how genetic traits of a species may change over time. This may lead to speciation, the formation of a distinct new species.

Explanation:

e:
Scientists think the earth is approximately how old?
2 billion years
3 billion years
for 4 12 billion years
612 billion years
Scientists think the earth is approximately how old

Answers

Answer:

4 billion

Explanation:

Answer:

4 billion

Explanation:

4 billion

Select all the following that describe isotopes of an element
_ Different numbers of neutrons
_ Different mass numbers
_ Different atomic numbers
_ Different numbers of protons

Answers

Answer: different number of neutrons and different mass numbers

Explanation:

The statements that describe isotopes of an element are:

Different numbers of neutrons.Different mass numbers.

What is an isotope?

An isotope is defined as varieties of atoms that have the same atomic number and therefore constitute the same element even though they have different mass numbers.

Characteristics of an isotope of an element

Atoms that are isotopes of each other have the same number of protons in the nucleus.

They are found in the same place within the periodic table.

Therefore, we can conclude that the isotopes of an element are atoms with the same atomic number but different mass numbers.

Learn more about the isotopes of an element here: https://brainly.com/question/18586743

Match the structural formula to the chemical formula for this substance.

CH2Cl2

C2H6O

C2H6O2

H2CO3

Answers

Answer:C2H6)

Explanation:

Answer:

C2H6O

Explanation:

The codon, CAG, is being carried by a mRNA strand into the
cytoplasm. By using the Codon Chart, what amino acid will it code
for?

Answers

The answer is glutamine

Much of the Florida landscape is built upon limestone. Frequent rains seep down and erode the limestone as the rainwater travels to underground caverns or aquifers. Which of the following landforms could be created as a result of this process?

Answers

Answer:

potholes/ sinkholes. most likely sink holes. i dont have options

Explanation:

How is food moved through the gut?
a. By peristalsis c. By waves of liquid
b. By gravity
d. Movement​

Answers

Explanation:

a. By peristalsis

..................

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Someone please help me. ASAP An acute ABC is rotated about a point and then dilated by a scale factor of 0.5 to produce ABC. Which statement correctly compares ABC to ABC. What is the domain of the relation?A){-4,- 2 1, 4}B){-2, 1, 4}C){-2, 1, 4, 4} D) (-4,-2), (-2,1), (1,4), (4,4) Derrick is creating a public service announcement to persuade people to recycle cans, bottles, and paper. What evidenceshould he include to support his claim that recycling benefits the environment?Cans and bottles can be recycled in many different ways.Recycling reduces the amount of trash sent to landfills.Recycling programs are very popular at businesses.Most cans, bottles, and types of paper are easily recyclable. Drag the item from the item bank to its corresponding match. What is the solution? We learned in class that Starbucks uses its baristas as front line brand ambassadors. This is an example of ________________? 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Select all that apply.Magnetic fields point from the north pole to the south pole of a magnet.The earth's magnetic field has no effect on the electron rays coming from the sun.An example of the Biot-Savart law is the effect of the earth's maghytic field on the electron rays coming from the sun.The north pole of a magnet will be attracted to the south pole of the earth.If a bar magnet is cut in half two magnets with like poles will be created. How were the Allied forces able to win World War I? During El Nio years, why is Christchurch, New Zealands temperature cooler than usual?Choose the claim that is most similar to your idea. Your response does not need to be the same as your partner's.This is why Christchurch, New Zealands air temperature is cooler than usual during El Nio years: Claim 1: The amount of incoming energy from the sun changes.Claim 2: Something about Earths surface (land or water) changes.Claim 3: Something about the air changes.Please get back to me quick, due in an hour. First to answer will be named brainliest! HELPP You weighed out 0.020 g of your crude aspirin product in order to determine the amount of salicylic acid impurity. Following the procedure outlined in the manual, you dissolved the solid and diluted the solution to a final volume of 10.0 mL. If the absorbance of your sample solution was 1.07, what was the percent salicylic acid in your product A seed randomly blows around a complex habitat. It may land on any of three different soil types: a high-quality soil that gives a 0.8 chance of seed survival, a medium-quality soil that gives a 0.3 chance of survival, and a low-quality soil that gives only a 0.1 chance of survival. These three soil types (high, medium, and low) are present in the habitat in proportions of 30:20:50, respectively. The probability that a seed lands on a particular soil type is proportional to the frequency of that type in the habitat.a. Draw a probability tree to determine the probabilities of survival under all possible circumstances.b. What is the probability of survival of the seed, assuming that it lands? I need help with this please ASAP!!! A cloud provider is deploying a new SaaS product comprised of a cloud service. As part of the deployment, the cloud provider wants to publish a service level agreement (SLA) that provides an availability rating based on its estimated availability over the next 12 months. First, the cloud provider estimates that, based on historical data of the cloud environment, there is a 25% chance that the physical server hosting the cloud service will crash and that such a crash would take 2 days before the cloud service could be restored. It is further estimated that, over the course of a 12 month period, there will be various attacks on the cloud service, resulting in a total of 24 hours of downtime. Based on these estimates, what is the availability rating of the cloud service that should be published in the SLA? give one reason mendel chose pea plants for his experiment . in retort who is phyllis A law firm received $1600 cash for legal services to be rendered in the future. The full amount was credited to the liability account Unearned Service Revenue. If the legal services have been rendered at the end of the accounting period and no adjusting entry is made, this would cause: