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il63 [147K]
2 years ago
11

Certain foraminifera (shelled protozoa) have inconsistent fossil records. Which mode of evolution do they represent?

Biology
2 answers:
Setler [38]2 years ago
7 0
Punctuated equilibrium is a theory biology<span> which proposes that once </span>species<span> appear in the fossil record they will become stable.
</span>

So according to above explanation

<span>C. puncated equilibrium</span> , is the correct answer

ratelena [41]2 years ago
5 0

Answer:

Punctuated equilibrium

Explanation:

Punctuated equilibrium is a concept in biology which suggests that the population will become constant once a species appears in  fossil record, indicating little evolution throughout its geological history.

Punctuated equilibrium is strongly opposed to phyletic gradualism,which usually belief that evolution normally occurs universally and through the steady and incremental transformation of the whole lineages

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"The DNA in one species of bacteria can be exchanged with an unlike species of bacteria" is the one among the following that <span>best describes a complication of classifying bacteria based on genetic information. The correct option among all the options that are given in the question is the first option or option "A".</span>
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Name the phase:<br>Hint: Chromosomes are moving apart.​
umka2103 [35]

Answer:

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3 years ago
In an analysis of the nucleotide composition of DNA, which of the following proportions will be found?
katrin [286]

Answer:

With respect to the composition of DNA, in an analysis it can be found that the proportions of nucleotides are A + C = G + T (option a).

Explanation:

The proportion of nucleotides in a DNA molecule can be established according to the sequence of these nucleotides on both complementary strands, since the purinic bases of one strand are complemented by the pyrimidinic bases of another:

  • <em>Adenine is complemented with Thymine A=T</em>
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From this we can deduce that in a DNA molecule with two chains there will be the same amount of adenine and thymine, as well as the same number of guanine with respect to cytosine, so:

<em>     A + C = G + T</em>

An example of this would be a known DNA molecule (hypothetical), with 5 molecules of Adenine and 7 molecules of Guanine. In this case there are 5 Thymines, complementary with Adenine, and 7 Cytosines like Guanine:

<em>     A + C = G + T</em>

<em>     5 + 7 = 7 + 5</em>

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