this couple? What are the genotypes of any daughters this couple has? What
are the genotypes of any sons this couple has?
Parent 1:
Parent 2:
b. the organisms that live in a place
c. the factors controlling the organisms
The answer you are looking for is none other than A
b. blastocyst
c. embryo
d. fetus
Answer : The correct answer for the blank is -
a. zygote.
A zygote can be described as a diploid cell that is produced by the fusion of gametes (from each parent such as egg and sperm). The process of fusion is called fertilization and zygote is also called fertilized ovum/egg.
Zygote undergoes multiple rounds of proliferation (cell division through mitosis) and ultimately differentiates to produce the highly advanced stage, fetus (which is fully developed baby).
Thus, a zygote is formed when sperm meets egg and contains all DNA necessary to create a person.
Ans. (D). if the egg is not fertilized.
The major female sex hormones (estrogen and progesterone) are released by ovaries. During ovulation, ovary releases female gametes or eggs. After the release of eggs, corpus luteum is formed in the ovary, which releases both the female hormones (estrogen and progesterone) and prepare uterine lining for potential pregnancy.
When fertilization occurs, corpus luteum continuously secrets female hormones and allows implantation. However, if the egg is not fertilized, the corpus luteum starts to degenerate and secretion of female hormones stops.
Thus, the correct answer is option (D).