Plz help,, explanation if possible because I don’t understand at all :,/

I can't identify the phenotypes since I don't know what trait B represents, what trait C represents and what trait c represents.

But you can find the phenotypic ratio by finding the number of individuals with each phenotype. The yellow squares are individuals that all have the same phenotype as each other. And the blue squares have the same phenotype as each other, but a different phenotype from the yellow squares.

The ratio would be written as:

(number of yellow squres):(number of blue squares)

12:4

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )