Answer:The endocrine system is made up of glands that produce and secrete hormones, chemical substances produced in the body that regulate the activity of cells or organs. These hormones regulate the body's growth, metabolism (the physical and chemical processes of the body), and sexual development and function.
Explanation:
Answer:
The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred. The events that occur in meiosis but not mitosis include homologous chromosomes pairing up, crossing over, and lining up along the metaphase plate in tetrads.
Explanation:
I’m pretty sure the answer is A but if you already ruled that out try B
Answer:
Explanation:
Purple flowers (P are dominant to white (p), and long pollen (L) is dominant to short pollen (l).
A true breeding variety of peas with purple flowers and short pollen is crossed to a true breeding variety with white flowers and long pollen.
Parent genotype PPll x ppLL
F1 genotype will be PpLl
self crossing of F1 PpLl x PpLl
b. What proportion of the F2 will have purple flowers with long pollen?
Pp x Pp = 3/4 purple flowers, 1/4 white flowers
Ll x Ll = 3/4 long pollen, 1/4 short pollen
Thus answer is 3/4 x 3/4 = 9/16 purple flowers with long pollen
c. What proportion will have white flowers and short pollen?
thus, answer is 1/4 white flowers x 1/4 short pollen = 1/16.
