Answer:
hope this helps..
Explanation:
Dependent on the level of comparison four types of homology are defined: ( 1) Iterative ( = serial = homonomy), (2) ontogenetic, (3) di- or polymor- phic, and (4) supraspecific homology. ... Scientists have recently been paying renewed attention to the homology question.
Homology is the study of likeness, the similarity between species that results from inheritance of traits from a common ancestor. The study of similarities is broken up into three main categories: structural, developmental, and molecular homology.
It starts with the cells<span>, followed by the tissues, then the organs, and ending with the organ .</span>
Answer:
The correct answer is pituitary gland.
Explanation:
The pituitary gland is called the master gland because it regulates the secretion of many other endocrine glands. Pituitary is responsible for the secretion of hormone that regulated the level of estradiol and progesterone during the menstrual cycle.
Anterior pituitary release FSH(follicle-stimulating hormone) and LH(Luteinizing hormone) after it gets stimulation by GnRH secreted by the hypothalamus. FSH help in the production of estrogen by stimulating follicle and LH is responsible for the production of progesterone from corpus luteum. Therefore the correct answer is the pituitary gland.
I believe it is scientific laws.
Answer:
Aids in preventing polyspermy.
Explanation:
Polyspermy is a process that involves multiple fertilization of an egg by multiple sperm, which leads to the embryo inheriting multiple centrioles from the parents. Polyspermy is often considered lethal, and there are several mechanisms in most animals that prevents multiple fertilization of eggs. One of such mechanisms is the possession of a micropyle by zebrafisg eggs which limits the chances of multiple fertilization, as only one sperm is able to pass through the micropyle at a time. This micropyle most likely aids in preventing polyspermy.
