Answer: D. a genetic bottleneck
Explanation:
A genetic bottleneck also known as a population bottleneck is one that describes a sharp reduction in the size of a population caused by environmental events like in the above or caused by human activities.
Mendel realized that the principles of probability could be used to predict the results of genetic crosses.
The correct option is this: ANCESTRAL STATE RECONSTRUCTION SUGGESTING THAT THESE ANIMALS HAD OPSINS THAT WERE SHIFTED TOWARD THE RED.
Ancestral reconstruction is the extrapolation back in time from measured characteristics of individuals to their common ancestors. Opsins are a group of light sensitive proteins that are located in the photoreceptor cells of the retina of the eyes. Having opsin that were shifted toward the red colour will enable the animal to see very well in the night time, thus, the animal will be active during that period.
Answer: RBC/ Erythrocytes/ Red blood cells
<u>Explanation</u>: The blood consists of the following components- white blood cells, red blood cells, platelets and plasma. Different components perform different functions.The part which carries the gases is the RBCs or erythrocytes. They carry oxygen as well as carbon dioxide. RBC’s contain a pigment- hemoglobin, which binds oxygen molecules and carries it to each and every cell of the body.