Answer:
Variation occurs in germ cells i.e. sperm and egg, and also in somatic (all other) cells.
Explanation:
Answer:
Those fish were prey.
Explanation:
It is clear to see that the utilization of full body plates drastically increased and the usage of half body plates dramatically decreased. This is likely showing that these fish were heavily targeted, and therefore, needed to use better defensive mechanisms; hence the usage of full body plates compared to two-thirds or half. This is all showing these fish were likely prey for bigger fish, or perhaps non-marine predators as well.
Answer:
According to the hormone diagram of the menstrual cycle, the woman is not pregnant due to the behavior of progesterone and estrogens, whose levels do not increase, in addition to the absence of human chorionic gonadotropin.
Explanation:
The graph shows the behavior of hormones during a woman's menstrual cycle in the absence of pregnancy.
During a woman's normal cycle, estrogen, luteinizing hormone (LH) and follicle stimulating hormone (FSH) tend to increase prior to ovulation, reach their peak values at ovulation, and then decline, as shown in the graph. Progesterone, on the other hand, increases after ovulation and decreases if the woman does not become pregnant.
In the case of a pregnant woman:
- <u>Estrogens</u> continue to increase after ovulation, produced by the ovaries and placenta.
- <u>Progesterone</u> also increases its levels, as it is a hormone produced by the ovaries and placenta.
- <u>Hormone human chorionic gonadotropin</u> (HCG) appears and increases during pregnancy, due to the secretory activity of the placenta.
<em><u>The diagram represents the normal cycle of a woman who is not pregnant</u></em>.
