There are a group of 13 related species of birds on a group of about 20 isolated oceanic islands. These species are grouped into four oubgroups with subgroup 1 evolving to species), subgroup 2 evolving second (1 species), subgroup 3 evolving third (5 species), and subgroup 4 evolving last (6 species. I subgroup 4 evolved most recently, then which the following statements is the most logical prediction?
a) The genomes of subgroup 4 should be more similar to each other than to the genomes of subgroup 3.
b) The chances of hybridization between two subgroup 4 species should be less than the chances of hybridization between two subgroup 3 species
c) The species of subgroup 4 should share tower anatomical homologies with each other than they share with the species of subgroup 4.
d) Subgroup 4 should be limited to the six islands that most recently emerged from the sea.
Answer:
C
Explanation:
what does a plant cell have and a animals cell dosent have
Answer: Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Explanation:
Answer:
cell wall and chloroplasts are the likely answer but plasmodesmata, plastids, and a large central vacuole also work
Explanation:
yea
The extensor carpi radialis longus inserts on which of the following bones?
Answer:
c. 2nd metacarpal
Explanation: is correct edg
The ________ trimester is the most sensitive time in fetal development, because this is when most organs are formed.
Answer:
Second
Explanation:
This is when the child starts hearing at is more prone to injury
The size of a food Web is límited by the Number of
Answer:
The amount of carbon and energy entering it.
Explanation:
The food chain is limited because " only 10% of the energy from producers get transferred to the level of primary consumer"
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Mushrooms grow seeds under their cap-like crowns.
True
False
True- not all mushrooms do this, but seeing one like this is a beautiful sight
for each molecule of glucose consumed how many times does the krebs cycle occur
Answer:
Glycolysis, Pyruvate Oxidation and the Krebs Cycle
For each glucose molecule respired, the cycle reactions occur twice as two pyruvic acid molecules are formed
Explanation:
Answer:
twice im pretty sure
Explanation:
For your club’s fundraiser, you decided to hold a bake sale. In order to make bakery items, you had to purchase 12 pounds of sugar and 15 pounds of flour. Your total cost was $9.30. On a second trip to the grocery store, you purchased 4 pounds of sugar and 10 pounds of flour for a total cost of $4.60. Which of the following represent the system of equations for this problem?
Group of answer choices
A. 12s+15f=9.30
10s+4f=4.60
B. 12s+15f=9.30
4s+10f=4.60
C. 12s+15f=4.60
4s+10f=9.30
D. 12s+4s=9.30
15f+10f=4.60
Answer:
A
Explanation:
The formation of proteins is dependent on?
How many chromosomes an individual has
The sequence of DNA in genes
Whether or not a mutation has occurred
How many genes are in a chromosome
Answer:
How many chromosomes an individual has
Which is the smallest functional unit of the nervous system?
A.
A nerve
B.
A neuron
C.
A receptor
Answer:
neuron
Explanation:
The smallest functional unit of the nervous system is the neuron. Neurons are specialized cells that send out neurotransmitters to other neurons.
Answer:
Neurons
Explanation:
which statement about human blood vessels is correct?
PLEASE PLEASE ANSWER ASAP FOR CHANCE OF BRAINLIEST!!!
Photosynthesis Virtual Lab
Summarize the results and provide an explanation or reasoning for what was observed. How does light color affect the rate of photosynthesis? Why does the color of light matter?
Answer:
The lights higher on the light spectrum, like blue would have the fastest rate of photosynthesis because the energy is the highest. the green light would have the slowest rate because the chlorophyll inside of the leaves reflects green light, so it would not be absorbed as mich as the other colors. The color matters because the color or wavelength of light does affect photosynthesis, which is how plants can create their own food.
Hormones perform important functions within the reproductive system. During puberty, secondary sex characteristics develop. Which hormone is responsible for the development of these characteristics in the female? estrogen progestin progesterone testosterone.
Answer:
Estrogen
Explanation:
Estrogens are a group of hormones that play an important role in the normal sexual and reproductive development in women.
Estrogen is responsible for the development of these characteristics in the female. Therefore, option (A) is correct.
What is Estrogen?Estrogen, also known as oestrogen, is a class of sex hormone that is responsible for the growth and regulation of the female reproductive system as well as secondary sex characteristics. Estrone, estradiol, and estriol are the three primary endogenous estrogens that are responsible for the majority of the hormone activity associated with estrogen.
The growth, development, and physiological functioning of the human reproductive system are all controlled by estrogen. In addition to affecting the neuroendocrine and skeletal systems, this hormone also affects the adipose and cardiovascular systems. Estrogen is a vital component of the male and female reproductive systems and is primarily manufactured by the ovaries in females and the testes in males.
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Removal of waste products in the body is called _____.
It's called excretion.
a) An F1 x F1 self-fertilization gives a 9:7 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
b) An F1 x F1 self-fertilization gives a 9:3:4 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
c) An F1 x F1 self-fertilization gives a 15:1 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
According to the gene interaction that is operating in the trait determination, the phenotypic ratios of the progeny produced when test-crossing a dihybrid are: a) 4:12, b) 8:8, and c) 12:4
-------------------------
To answer these questions, the first thing you should notice by looking at the phenotypic ratios provided, is that there are two genes involved in the trait, and there is interaction between them.
Let us assume diallelic genes. A and B are the dominant alleles, while a and b are the recessive alleles.
In the three cases (a, b, and c), F1 individuals are dihybrid. Their genotype is AaBb.
Observing the altered phenotype proportions of the offspring can reveal which interaction is operating in the trait determination.
We can use the phenotypic ratio to determine the interaction, so:
9:3:3:1 ⇒ No interaction9:7 ⇒ Double Recessive epistasis 9:3:4 ⇒ Recessive epistasis15:1 ⇒ Dominant duplicate genes.When talking about epistasis, we are referring to an interruption.
The epistatic gene can alter, influence, or suppress the expression of a hypostatic gene.
When there is only one epistatic gene in h0m0zyg0us recessive state, the interaction is known as recessive epistasis. This gene supresses the expression of the other gene. Phenotypic ratio 9:3:4.In double recessive epistasis, both genes are epistatic when they are in a h0m0zyg0us recessive state. This is, in the h0m0zyg0us recessive state, either of the genes will inhibit the expression of the other gene. And vice-versa. Phenotypic ratio 9:7.In Duplicate gene action, there are two genes involved in the expression of a phenotype, and the presence of at least one dominant allele is enough to produce the dominant phenotype. Phenotypic ratio 15:1.
So now, let us make the test-cross.
Note: You will see that the cross is the same in the three cases, but the phenotypic ratio changes according to the interaction.
Cross) dihybrid individual with h0m0zyg0us recessive one
Parental) AaBb x aabb
Gametes) AB, Ab, aB, ab ab, ab, ab, ab
Punnett square) AB Ab aB ab
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
F2) Phenotypic ratio
***Double recessive epistasis ⇒ 4:12
4/16 dihybrids12/16 heter0zyg0us for one gene and h0m0zyg0us recessive for the other gene.Both genes in recessive state inhibit the expression of the trait.
***Recessive epistasis ⇒ 8:8
In h0m0zyg0us recessive state, Gene A inhibits the expression of B.
8/16 AaBb or Aabb → The trait coded by B or b is being expressed8/16 aaBb or aabb → The trait coded by B or b is inhibited by aa.***Duplicate gene action ⇒ 12:4
Only one dominant allele, either A or B, is enough to express the trait.
12/16 AbBb, Aabb, or aaBb 4/16 aabb → No dominant allele, no trait expressed.Phenotypic ratios:
a) 4:12 = 1:3
b) 8:8 = 1:1
c) 12:4 = 3:1
---------------------------------------------------------
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Cómo se puede introducir el ADN de una célula en otra célula diferente?
Answer:
En conjugación, el ADN se transfiere de una bacteria a otra. Después de que la célula donante se acerca al receptor mediante una estructura llamada pilus, el ADN se transfiere entre las células. En la mayoría de los casos, este ADN está en forma de plásmido. Explanation:
According to urban anomie theory the impersonal nature of city life extends to situations that do not call for social involvement. Please select the best answer from the choices provided T F.
Answer:False
Explanation: right on Edge
The statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true, as urban anomie theory suggests that the impersonal nature of city life leads to the breakdown of social bonds.
What is urban anomie theory?According to this theory, the fast pace of urban life, the diversity of populations, and the emphasis on individual achievement can lead to a weakening of social ties and a breakdown of social norms and values. As a result, individuals may feel disconnected from others and from society as a whole, leading to a sense of alienation and a lack of meaning in their lives. This sense of normlessness and detachment can extend beyond situations that require social involvement, such as interactions with neighbors or participation in community events, to other aspects of daily life.
Hence, the statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true.
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how is energy extracted
Answer:
Mark me as a Brainliest Please :)
Explanation:
The same principle works in all three cases, which is, the energy becomes heat and is extracted with the help of turbines in the same way that fossil fuels are burned. An electron-emitting neutron is equivalent to releasing kinetic energy. Histamine is a hydrogen atom with a helium nucleus.
Match the name of the structure to its function.
I’ve posted a pic of the correct answers
Which of the following statements best compares reproduction in viruses with reproduction in single-celled protists? no links please
Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own. Therefore, the correct option is (C).
Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own. The main difference between reproduction in viruses and single-celled protists lies in their reproductive processes. Viruses are obligate intracellular parasites that lack the cellular machinery required for replication. They rely on infecting host cells and hijacking their machinery to reproduce and create new viral particles. In contrast, single-celled protists are independent organisms capable of self-replication through various mechanisms such as binary fission, budding, or spore formation. They do not need a host cell for their reproductive processes. This fundamental distinction highlights the unique strategies employed by viruses and protists in propagating their species.Therefore, the correct option is (C).
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Question:
Which of the following statements best compares reproduction in viruses with reproduction in single-celled protists?
A. Viruses reproduce by releasing spores; single-celled protists reproduce by dividing in half.
B. Viruses require large colonies to reproduce; single- celled protists reproduce as individual cells.
C. Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own.
D. Viruses form haploid gametes when they reproduce; single-celled protists form diploid gametes when they reproduce
Which statement about biodiversity in coral reefs is accurate?(1 point) *EARTH SYSTEMS*
A) More new species have evolved in coral reef habitats than in most other types of habitats.
B) Species that evolved in coral reef habitats always stay in those habitats.
C) Coral reefs have much biodiversity, but most species that live there migrated from other habitats.
D) Most organisms that live in coral reef habitats are zooxanthellae.
The statement 'more new species have evolved in coral reef habitats than in most other types of habitats.' is accurate. A coral reef is a hotspot of biodiversity.
A coral reef is a marine ecosystem composed of organisms (i.e., corals) that form a wall together (i.e., reef-building corals).
These reefs consist of many colonies of coral polyps, which held together by a calcareous material (i.e., calcium carbonate)
A coral reef is a hotspot of biodiversity because there are many different species that live and evolved in this type of habitat.
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Answer:
'more new species have evolved in coral reef habitats than in most other types of habitats.'
Explanation:
trust
What is an advantage of being multicellular?
-having lower energy requirements
-producing offspring that mature quickly
-having a high tolerance for extreme conditions
-being more adaptive to the surroundings
4th- being more adaptive to the surroundings
Give an example of display behavior exhibited by a territorial animal.
Explanation:
different animals have different warning signs b4 attack.
a male bird will squawk & spread wings 2 make itself look larger
a dog will growl
A herd animal/ buffalo, deer, etc. will announce there is a threat 2 rest of herd..
even a squirrel will sound an alarm if a cat or preditor is lurking or hiding..
A cell is grown in a medium with radioactive amino acids for five minutes. The radioactive amino acids are able to be transported into the cell and assimilated into the proteins that are being assembled. After the cells are removed from the radioactive culture, the level of radioactivity is monitored at different time points. It is found that the area of the cell with the highest radioactivity after five minutes is the ribosomes on the rough endoplasmic reticulum. As time progresses, which statement best explains where the level of radioactivity will be highest in the next five minutes?
A) The radioactivity will be highest in the mitochondria, as the proteins made by the cell will need to be modified using ATP.
Eliminate
B) The radioactivity will be highest in the nucleus as the proteins made at the ribosome will be shipped to the nucleus to replicate the DNA.
C) The radioactivity will be the highest outside of the cell because the endoplasmic reticulum transports proteins directly to and through the cell membrane.
D) The radioactivity will be highest in the Golgi apparatus, as proteins made on the rough endoplasmic reticulum are transported to the packaging center prior to leaving the cell.
Answer:
It’s D ,I got it right on USAtestprep
Explanation:
The correct option for this answer is D, which signifies that the radioactivity will be highest in the Golgi apparatus, as proteins made on the rough endoplasmic reticulum are transported to the packaging center prior to leaving the cell.
What do you mean by Radioactivity?Radioactivity may be defined as a spontaneous process that involves the emission of radiation in the form of particles or high-energy photons resulting from a nuclear reaction.
The path of protein transport determines the level of radioactivity in this experiment.
First, the radioactivity is found highest in the ribosomes of ER, then the proteins are transported to the region of the Golgi apparatus by an anograde pathway and reflect in radioactivity.
Therefore, it is well described above.
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DNA profiling is also called DNA fingerprinting. A common misconception about DNA fingerprinting is that the analysis has to do with actual fingerprints. Explain one similarity and one difference between a human being’s pattern of bands on an electrophoresis gel and a human fingerprint.
Answer:
Explanation: Electrophoresis displays the entire DNA sequence, whereas fingerprinting allows you to quickly identify someone. But they have one thing in common: they are both so distinctive that it is nearly impossible for two persons to have the same fingerprint/DNA sequence.
What would happen if there was an error in DNA replication?
Answer:
When replication mistakes are not corrected, they may result in mutations, which sometimes can have serious consequences. Point mutations, one base substituted for another, can be silent (no effect) or may have effects ranging from mild to severe.
hope it's helpful
thank you
Answer:
Hi plss mark as brainliest
Explanation:
When Replication Errors Become Mutations. Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division.
I'll give you a brain list if you help me.
Answer: The second one
Explanation: Hope this helps :)
HELP ME PLEASE VERY URGENT !!!!!!! PLEASE TAKE A QUICK LOOK AT THE PICTURE YOULL GET POINTS !!
Explanation:
because the R called in sperm nuclei
hope it helps
what is the difference between channel proteins and carrier proteins
Answer:
Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.
Explanation:
Hope It helps
What can plant reproduction tell us about the evolution of plants?
Explanation:
Reproduction is important in plants to produce their progeny and to maintain its population. Plant reproduction helps to maintain its birth rate and sustain the ecosystem. Reproduction helps to acquire new variations and adapt to the environment with the most desirable characters.
