Answer:
Nitrogenous;Acid-Base and Fluid
Explanation:
The kidney is referred to as an excretory organ because it excretes nitrogenous wastes. It is also a major homeostatic organ because it maintains the electrolyte Acid-Base, and fluid balance of the blood.
Answer:
they all are
Explanation:
Venereal diseases STDs. They can be given through close contact or an exchange of bodily fluid.
Answer:
No, Presence of different alleles for an X-linked gene is required to test the Lyon hypothesis.
Explanation:
According to the Lyon hypothesis, to compensate the dosage of X linked genes in males and females of mammals, one X chromosome in all the cells of a female mammal is inactivated and the presence of the gene on the other X chromosome is expressed.
Inactivation of the X chromosome is a random process, that is, either maternal or paternal X chromosome may be inactivated during early embryological development in females.
To test the Lyon hypothesis, the expression of alternative alleles of an X-linked gene in the cells of a female mammal is studied. Given that the human female is homozygous for an X-linked gene, all of her cells would express the same allele for the gene, and the Lyon hypothesis can not be tested.