<span>Changing one amino acid in the protein hemoglobin causes sickle-cell anemia.</span>
Answer:
The correct answer would be option D.
Explanation:
Pollen of a plant is a gamete, that contains half of the alleles are required to produce the plant. Pollen fuse with stigma and complete the required alleles or genetic information.
Possible combinations in pollen would be one allele from each trait in every form either dominant or recessive. So ST, St, sT, st. would be the correct possible genetic combination present in a single grain.
Thus, the correct answer is option D.
Answer:
Well for one, a dogs sperm couldn't fertilize a cats egg and vice versa. Their breeding behaviors, heat cycles, and different DNA prevent them from being able to produce healthy, viable offspring.
Explanation:
The chemical division process called mitosis is split into the following 6 steps, such that: interphase<span>, prophase, </span>metaphase<span>, anaphase, telophase, cytokinasis. The firts step of mitosis is characterized by the presence of one cell, but in the end of process there exists two identical cells.</span>
