Ok... This is a bit complicated but bear with me. In a female's body Estrogen and Progesterone are two of the major used to maintain the menstruation cycle. Gonadotrophic substances are an entirely different topic with it being the hormones FSH and LH (These hormones are released while an egg is in development in the ovaries).
Without going into even deeper specifics. Estrogen is used by the body signal to ovulate, as well as thicken the uterine walls... Progesterone is used to maintain the uterine walls "after" the egg is fertilized. What the pill is suppose to do is actually force a premature ovulation, which is why there is estrogen. The Progesterone's job as is maintain the uterine wall's endometrium to a low level and helps keep blood loss from a period at a minimum.
If you need clarification please feel free to question.
It shows how one continent divided into many.
Answer:
The number of linked genes, which are common to the group.
Explanation:
A gene map signifies towards a chromosomal map, which illustrates the spatial organization of genes on a chromosome. The genes, which are situated on distinct chromosomes or, which are situated far away on the similar chromosome are illustrated as unlinked genes, while the genes that are near to each other on the similar chromosomes are considered to be linked.
The linkage maps are formed by determining recombination frequency for many pairs of genes. The linkage maps demonstrate the order and relative distance of the genes on the chromosome. In order to form a linkage map for an array of organisms, the scientists have to predict the number of linked genes, which are common to the group.
Answer: Septum: Prevents oxygen rich blood mixing with oxygen poor blood in the heart.
Valves: Prevent backflow.
Explanation:
Red blood cells-(a)they carry oxygen around the body not protect from pathogens
