Answer:
B
Explanation:
Directional selection tends to evolve towards one specific trait. In this example, white rabbits no longer have a competitive advantage because of disappearing snow. This means they are more easily spotted by predators, resulting in reduced fitness and less chance they will live to reproductive age and pass their recessive white alleles on.
Natural selection will favor the gray colour allele, increasing the frequency oft this previously rare allele.
Answer:
D
Explanation:
The item labeled 2 is the cell capsule that protects the cell from engulfment by eukaryotic cell, such as macrophages.
Temperate deciduous forests<span> or temperate broad-leaf</span>forests<span> are dominated by trees that lose their leaves each year. They are found in areas with warm, moist summers and mild winters. so </span>Precipitation in deciduous forests is best described as "<span>occurring throughout the years"</span>
Answer:
The BRCA gene is a tumor-suppressor gene found in the breast; to be more specific, it produces proteins that suppress cancerous activities/abnormal growth in the body. A mutation in a BRCA gene would allow these abnormal growth activities to go unchecked and thus increase the rate of mitosis. Cell cycle checkpoints would significantly be worse at their jobs of checking and correcting for errors during the cell cycle. Tumors would result as well, as cancerous growth continues, and the tumor can become metastatic.
