Answer: Directional selection occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other. ... Directional selection does the “heavy lifting” of evolution by tending to move the trait mean toward the optimum for the environment.
<span>The answer is A. This is because the P53 gene is involved in a cell cycle regulation and is thought to hold the cell in a particular phase until DNA defects are repaired. </span>
<u>Answer:</u>
The correct answer option is C. Annelids.
<u>Explanation:</u>
Annelids are the invertebrates that have segmented bodies.
The annelids or Phylum Annelida (also called ringed or segmented worms) are widely known for their characteristic of having segmented bodies.
These annelids contain largely segmented bodies with each segment having secondary subdivisions known as annuli which consists of elements of the different body systems which are essential for life, for instance the nervous system.
Answer:
monomers called amino acids. They are linked together to form a polypeptide chain, which folds into a three dimensional (3D) structure to constitute a functional protein