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meriva
3 years ago
9

Which are required for natural selection to occur

Biology
2 answers:
Damm [24]3 years ago
7 0
Four general conditions necessary for natural selection to occur<span> are: A. More organisms are born than can survive. B. Organisms vary in their characteristics, even within a species. D. Differences in reproduction and survival are due to variation among organisms.</span>
irakobra [83]3 years ago
3 0

Answer:

1. heritable variations for some traits

Explanation:

Assuming the options are:

  1. heritable variations for some traits
  2. the ability of an organism to improve a trait during its lifetime
  3. equal probability of survival for all offspring
  4. fewer offspring than the environment can support

there are four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

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A student is studying the amino acid sequence of a protein shared by four organisms. The student wants to know which organism is
MariettaO [177]

Answer:

Organism D.

Explanation:

Amino acids are the monomers of proteins and are linked together by the peptide bond. The protein is obtained from the RNA molecules by the process known as translation.

The amino acid sequence of the proteins can also be used to study the evolutionary relationship between the organisms and the closeness of teh organisms with each other. In the question it is give that organisms A and D has least difference ( 1 amino acid sequence difference) and more related with each other.

Thus, the answer is organism D.

5 0
3 years ago
Davy made a model of the water cycle by adding some water inside a plastic bag, sealing the bag, and placing it in a sunny area.
Ad libitum [116K]

<em>Davy made a model of the water cycle by adding some water inside a plastic bag, sealing the bag, and placing it in a sunny area. He noticed that the level of the water went down, and then some droplets appeared on the sides of the bag. which part of the water cycle caused water droplets to form on the side of the plastic bag?  </em>

<em>(a) condensation (b) evaporation (c) precipitation runoff</em>

The part of the water cycle that caused water droplets to form on the side of the plastic bag would be condensation.

<h3>What is condensation?</h3>

It is a process whereby water vapor in the atmosphere condenses or turns back into liquid.

Condensation is as opposed to evaporation. The latter is a process whereby liquid water turns into vapor water. In other words, evaporation and condensation are words and opposites.

Both processes play a major role in the water cycle of the ecosystem.

More on condensation can be found here: brainly.com/question/15563071

#SPJ2

4 0
2 years ago
In a species of Drosophila, developing larva have special proteins in their epithelial cells. These proteins bind to a certain r
kkurt [141]

Answer:

The larva gets dark pigment.

Explanation:

If scientists purposely injected an excess concentration of these proteins in the larva, the larva gets deep dark colour because this protein is responsible for the pigment colour in the larva of Drosophila. By increasing the protein concentration the pigment will also have a very dark colour. So we can conclude from this that increasing the amount of protein causes increase in the pigment colour.

7 0
3 years ago
How many steps are involved in mitosis? <br> a. 1 <br> b. 2 <br> c. 4 <br> d. 8
Umnica [9.8K]
Mitosis is a step...which
further contains 4 steps each..
so the answer should be 4 steps..

mark brainliest if it helps
4 0
3 years ago
What processes occur during G2 phase? Choose all which apply.
Inessa [10]

Explanation:

the last part of interphase is called the G2 phase. The cell has grown, DNA has been replicated, and now the cell is almost ready to divide. This last stage is all about prepping the cell for mitosis or meiosis. During G2, the cell has to grow some more and produce any molecules it still needs to divide.

4 0
3 years ago
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