QUESTION
All the following statements support the theory that similar organisms have a common ancestor except...
CHOICES
a. groups of organisms display similar embryonic development
b. transitional fossils show links between groups of organisms
c. similar DNA patterns occur in closely related organisms
d. organisms sharing a habitat tend to develop similar behaviours

Answers

Answer 1

Answer:

similar DNA patterns occur in closely related organisms


Related Questions

Which of the following is an example of an adaptation?

A. Ducks swim near the shore by a picnic area, where food is always available.

B. A dog walks without pulling on its leash.

C. Wolves work together to catch prey.

D. Birds living near a highway learn not to fly away every time a car passes.

(Zoom the picture for better quality)

Answers

the answer should be D

Answer:

wolves work together to catch prey

Can someone please help me!

Answers

Answer:

thats the 2 number point okay,plasma contains platelets ,ok

When mammals develop in the womb it is called the __________
A. Growth period
B. Gestation period
C. Multipotent period
D. Embryonic period

Answers

B. Gestation period

Answer:

B. Gestation period

Explanation:

Gestation, in mammals, the time between conception and birth, during which the embryo or fetus is developing in the uterus. This definition raises occasional difficulties because in some species (e.g., monkeys and man) the exact time of conception may not be known.

Iron-55 has a half-life of 3 years. How much of a 40 gram sample will remain after 12 years? A. 0 grams B. 4 grams C. 2.5 grams D. 20 grams

Answers

Answer:

[tex]\boxed {\boxed {\sf C. \ 2.5 \ grams }}[/tex]

Explanation:

We are asked to find how much of a 40 gram sample remains after 12 years.

Iron-55 has a half-life of 3 years. Therefore, after 12 years, 4 half-lives have been completed.

12 years/3 years = 4 half-lives

Every time a half-life is completed, half of the sample's mass decays. Remember we start with a 40 gram sample.

1 half- life: 40 g / 2 = 20 g 2 half-lives: 20 g / 2= 10 g 3 half-lives: 10 g / 2 = 5 g4 half-lives: 5 g / 2 = 2.5 g

There is also a formula that can be used to solve this problem.

[tex]A= A_o(\frac {1}{2})^{\frac{t}{hl}[/tex]

Where A₀ is the initial amount, t is the time, and hl is the half-life.

We know 40 grams is the inital amount, 12 years is the time, and 3 years is the halflife.

A₀= 40 g t= 12 hl= 3

[tex]A= 40 \ g (\frac{1}{2})^\frac{12}{3}[/tex]

[tex]A= 40 \ g (\frac{1}{2})^4[/tex]

[tex]A= 40 \ g * 0.0625[/tex]

[tex]\bold {A= 2.5 \ g}[/tex]

After 12 years, 2.5 grams of Iron-55 will remain.

9.
Which is an environmental factor that affects skin color in humans?
O number of genes inherited
O amount of sunlight absorbed
O number of linked genes
O amount of food consumed

Answers

QUESTION:-

Which is an environmental factor that affects skin color in humans?

O number of genes inherited

O amount of sunlight absorbed

O number of linked genes

O amount of food consumed

ANSWER:-

AMOUNT OF SUNLIGHT ABSORBED.

Number of gene for color of the skin is same in all the human beings and also it's a genetic factors is there will be any absence of gene due to its deletion AMOUNT OF SUNLIGHT it is variable in variable reasons which is a imp factor for the color in variation in earth. In regions near to the equator have high amount of the light so they have darker skin color then the people near the poles as there is less amount of light .Number of gene inherited is also same for each and every individual for single species for human which is 378 gene loci and if there is any variation in number due to any genetics disorder it would be a genetic factor again.amount of food consumed is different for different people with same color in same region as it only depends on the work which is done by the individual in the society for its existence. though it is a environmental factor bit it didn't effect color of the species.

SO ACCORDING TO ABOVE DETAILS WE CAN CONCLUDE (2) AMOUNT OF THE SUNLIGHT IS THE ENVIRONMENTAL FACTOR WHICH IS RESPONSIBLE FOR THE COLOR OF THE SKIN IN HUMANS

What mechanical layer lies above the core?
Answer here

Answers

The mechanical layer lies above the core is the mantle. It is the layer that is found after the core and it is the second layer of the Earth . It is about 84% of the Earth’s volume.

Answer:

The mechanical layer that lies above the core is the mantle. It is a layer that is found after the core and is the second layer of the Earth. It is about 84% of the Earth's volume. It has a thickness of 2900 kilometers.

Waiting for your Prompt response.

A scientist observes rock masses that have moved past each other in opposite horizontal directions. Which feature does the scientist observe?

plateau
syncline
strike-slip fault
fault-block mountai

Answers

The scientist observes strike slip fault feature when rock masses that have moved past each other in opposite horizontal directions.

Answer:

Strike slip fault

Explanation:

when it masses moved away against horizontal directions.

Which of the following characteristics do most amphibians share?

A. Amphibians spend their entire lives on land,

B. Amphibians lay their eggs in water.

C. Amphibians are invertebrates.

D. Adult amphibians use gills to breathe.

Answers

Answer:

`B

Explanation:

Answer:

B. Amphibians lay their eggs in water

which of the following statement about carbon dixoide is not true?

a.) increased carbon dioxide in the atmosphere increases the green house effect

b.) carbon dioxide is a greenhouse gas

c.) atmospheric carbon dioxide levels have slowly declined over the last 50 years

d.) burning fossil fuels can increase carbon dioxide levels in the atmosphere

Answers

Answer:

c is not true

Explanation:

c is correct answer because carbon dioxide have been increased not decreased

In order for natural selection to occur, organisms must (select all that apply) Check All That Apply have variation that can be passed from one generation to the next. have variation that can be passed from one generation to the next. have differential reproductive success. have differential reproductive success. survive longer than another organism. survive longer than another organism. compete for resources. compete for resources. have adaptations to their environment. have adaptations to their environment.

Answers

Answer:

have variation that can be passed from one generation to the nextsurvive longer than another organismhave adaptations to their environment. have differential reproductive success.

Explanation:

Naturla selection is the survival and reproduction of individuals due to different phenotypes. The naturla selection represents a mechanism of evolution and changes in traits of species.

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

Natural Selection is a mechanism of evolution that occurs when there is a heritable variation for a trait and individuals with one version of the trait have greater reproductive success than do individuals with a different version of the trait.

In order for natural selection to occur, three conditions must be met:

There must be variation for the particular trait within a population.The variation must be inheritableIndividuals with one version of the trait must produce more offspring than those with a different version of the trait.

Thus,

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

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What are the effects of global warming on the earth over time?

Answers

Effects that scientists had predicted in the past would result from global climate change are now occurring: loss of sea ice, accelerated sea level rise and longer, more intense heat waves.

Podríamos decir que un ecosistema es un “Lugar”? Justifica tu respuesta.

Answers

Hello

first of all we know that an ecosystem is a biological system made up of a community of living organisms (biocenosis) and the physical environment where they are related (biotope). It is a unit composed of interdependent organisms that share the same habitat. Ecosystems often form a series of chains that show the interdependence of organisms within the system. It can also be defined as follows: "An ecosystem consists of the biological community of a place and the physical and chemical factors that constitute the abiotic environment." Abiotic and biotic factors are considered to be linked by trophic chains, that is, the flow of energy and nutrients in ecosystems.

This concept, which was introduced in 1935 by the English ecologist AG Tansley, takes into account the complex interactions between organisms (e.g. plants, animals, bacteria, protists and fungi) that form the community (biocenosis) and the energy flows and materials that pass through.

In more understandable terms, the ecosystem is not a place as such.

List the main principles of the cell theory.

Answers


Here are 3 principles! Hope this helps!!
1 all living organisms are compound by one or more cells
2 the cell is the structure and functional basic unit of life.
3 all cells originated from other cells
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.

Which is the difference between an antibiotic and an antiviral?

Answers

Answer:

There are no options in this question, the options are as follows:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

B. Antibiotics treat the symptoms, and antivirals destroy the causing organism.

C. Antibiotics are in liquid form, and antivirals are in mist form.

D. Antibiotics treat patients who have Staphylococcus, and antivirals treat patients who have the flu.

The answer is D

Explanation:

Specific drugs are used to curb infection or diseases caused by specific pathogens. An infection can be caused by either bacteria, virus or fungi. Considering their different mechanism of infection, viral infections are treated with the use of ANTIVIRAL DRUGS while bacterial infections are treated with the use of ANTIBIOTICS.

According to this question, staphylococcus is a bacterial genus and hence, patients with staphylococcus can be treated with antibiotics while flu is a viral disease, hence can only be treated with antivirals.

Answer:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

Explanation:

edg

Will the moon have the same phase at all locations on Earth (North America, Europe, Venezuela, and Argentina)? Explain the reasoning behind your answer.

Answers

Answer:

no

Explanation:

in different places it seems to be hide sometimes

When can exponential growth happen?

O A. When there are limited resources

O B. When the death rate is high
Han

O C. When carrying capacity is reached

O D. When there is no competition

Answers

Answer:

D. When there is no competition

Explanation:

If there is no competition in a population, exponential growth can occur.

Without competition, resources are not limited and a population can grow rapidly.

With limited resources, a high death rate, and a reached carrying capacity, population growth is strongly limited and cannot grow at an exponential rate.

So, answer choices A, B, and C are all incorrect.

The correct answer is D. When there is no competition

Which is NOT true about
natural selection?
A. It is observed in populations over generations.
B. It is done by humans to select certain traits useful to us.
C. It occurs with the traits that make a species successful.
D. It is similar to survival of the fittest.

Answers

Answer:

B. It is done by humans to select certain traits useful to us.

Explanation:

There are two main types of selection: natural and artificial. Natural selection is all of the other answers, it is seen over generations and allows the fittest to survive. It also occurs with no human intervention. However, artificial selection is done by humans. It occurs when humans breed animals to best fit their needs. This is best seen in dog breeding.

What form of genetic drift occurs from
adaptive radiation?
A. Founder Effect
B. Disruptive Selection
C. Coevolution

Answers

Answer:

b

Explanation:

Disruptive selection is a type of natural selection that selects against the average individual in a population. The makeup of this type of population would show phenotypes (individuals with groups of traits) of both extremes but have very few individuals in the middle.

The process of disruptive selection is a form of genetic drift that occurs from adaptive radiation (Option B).

What is adaptive radiation?

Adaptive radiation is an evolutionary process that occurs as a consequence of the generation of different species from a single species.

Adaptive radiation is generally associated with the processes of speciation and disruptive selection.

Adaptive radiation is fundamental for increasing the biodiversity in an ecosystem.

In conclusion, the process of disruptive selection is a form of genetic drift that occurs from adaptive radiation (Option B).

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Based on the data, which of the following is the most likely diagnosis?

Answers

Answer:

can you add a picture so I can help you can't solve it without no picture shown

add a picture please:)

three adaptation of mouse?​

Answers

Answer:

Mice sense their environment much in the same way as other mammal species. The house mouse has very good vision and hearing. They are equipped with large, cup shaped ears to help sense sound vibrations. They also have a good sense of smell and whiskers which they use to feel surface textures and air movements.

What goes on during interphase?

Answers

Explanation:

During interphase, the cell grows (G1), replicates its DNA (S) and prepares for mitosis (G2). ... Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA in preparation for mitosis, and conducts other "normal" cell functions.

Explanation:

During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase. During the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei. The cytoplasm is usually divided as well, resulting in two daughter cells

Explain how homologous and the fossil records support evolution.
Thanks so much!!!

Answers

Answer:

Los fósiles, una prueba de la evolucion. El estudio de los fósiles nos da una idea muy directa de los cambios que sufrieron las especies al transformarse unas en otras; existen muchas series de fósiles de plantas y animales que nos permiten reconstruir cómo se fueron adaptando a las cambiantes

Explanation:

Answer:

homologous: have identical position, value, or structure

Fossils: In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms.

 

Explanation:

The evolution theory is supported by multiple sorts of evidence: homologous structures show common ancestry, whereas similar selective pressure will manufacture similar variations. analogous structures (beneficial features).

In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms. This supports Darwin's organic process theory, whereby straightforward life forms {progressively|increasingly|more and additional} evolved into more advanced. Proof of adolescence forms comes from fossils.

What form of genetic drift occurs from
adaptive radiation?
A. Founder Effect
B. Disruptive Selection
C. Coevolution

Answers

Answer:

The correct answer is - B. disruptive selection.

Explanation:

Adaptive radiation is a type of genetic drift that relatively fast evolution of many species from a single common ancestor which means there is a big drift in a very small time.

Disruptive selection is a type of natural selection that shows phenotypes (individuals with groups of traits) of both extremes but has very few individuals in the middle. An example of this type is the evolution of mammals after the extinction of dinnosaurs.

Which of the following describes an
estuary?
A. has different levels based on how much sunlight
reaches that depth and is the largest marine biome
B. located in the photic zone and warm tropical waters
with build up of many layers of dead cnidarians
C. found where land and water meet and is covered by
water at high-tide then dry at low-tide
D. where freshwater streams meet the ocean and is a
breeding and feeding spot for birds and fish

Answers

Answer:

D. where freshwater streams meet the ocean and is a  breeding and feeding spot for birds and fish

Explanation:

Estuary is an area of freshwater where freshwater streams meet the ocean and also a  breeding as well as feeding place for birds and fishes. This estuary is the place of habitat for large number of biotic factors includes plants and animals such as shrimp, fish, and oysters etc. The population of these animals are lower due to human activities that cause pollution in the estuary which leads to death of animals.

Answer:d

Explanation:

A food web shows all the energy transfer interactions within a sample of organisms. A
food web diagram is provided.
Sun Algae Minnows - Bass
Insect
Larvae

Sunfish
Snapper
Turtles
Snails
The role of the snapper turtie is best defined by which of the following?
A
To break down waste products made by producers, such as algae
B
Top consumer that receives its energy from other consumers
С
Converts light energy from the sun and transfers it to consumers
D
Provides energy to the sunfish, snails, and bass

Answers

Answer:

The answer is most likely that the role of the snapper turtle is that it's the top consumer who receives its energy from other consumers

Explanation:

You grow mesenchymal cells in Dish A and epidermal cells in Dish B. If you take the liquid medium only (containing no cells) from Dish A and place some of it into the liquid medium covering the epidermal cells in Dish B, you notice that it causes the epidermal cells to round up and thicken. What developmental concept does this example best describe

Answers

Answer: induction of epithelial cells by paracrine signaling from mesenchymal cells.

Explanation:

Mesenchymal stem cells can be found in bone marrow and are vital in making and the repairing or skeletal tissues.

Based on the information given in the question, the developmental concept that the example best describe is the induction of epithelial cells by paracrine signaling from mesenchymal cells.

Which of the following is a way of storing carbon in organic material?

A. Consumption
B. Respiration
C. Burning fossil fuels
D. All of these

Answers

A way of storing carbon in organic material is Burning fossil fuels or D all of these

The ways of sorting carbon in organic material is consumption, respiration, and fuel burning. The correct option is D.

What is organic material?

Organic matter, also known as organic material or natural organic matter, is a massive source of carbon-based compounds detected in natural and engineered, terrestrial and aquatic environments.

There can be several ways to store carbon including consumption, respiration, and burning fossil fuel, etc.

Carbohydrates, lipids, proteins, and nucleic acids are the four primary types of organic compound present in all living things.

Organic compounds are crucial because carbon is found in all living organisms. They are the essential parts of many of the Earth's cycles.

The carbon cycle, for example, encompasses the exchange of carbon between plants and animals during photosynthesis and cellular respiration.

Thus, the correct option is D.

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What are the different parts of a microscope?

Answers

Answer:

Look at both of the file attachments

Head/Body houses the optical parts in the upper part of the microscope.
Base of the microscope supports the microscope and houses the illuminator.
Arm connects to the base and supports the microscope head.

What genetic abnormality causes Down Syndrome? How does this usually happen?

Answers

About 95% of the time down syndrome is caused by “trisomy 21.”the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.

6. The melting point of iodine is 114°C and the boiling point is 183°C. What state will Iodine be at each of these temperatures:
70°C –
210°C –
185°C –
127°C –
0°C –

Answers

Answer:

When an element is at a temperature that is higher than it's boiling point, it will be in gaseous form as it would have evaporated.

When the element at a temperature that is lower than it's melting point however, it would be in solid form as it would not have melted from it solid state yet.

70°C – Solid

Lower than melting point.

210°C – Gas

Higher than boiling point.

185°C – Gas

Higher than boiling point.

127°C – Liquid

Above it's melting point but below it's boiling point. It is a liquid at this point because it has melted but has not evaporated.

0°C – Solid

Lower than melting point.

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