Two genes control color in corn snakes as follows: O- B- snakes are brown, O- bb are orange, oo B- are black, and oo bb are albino. An orange snake was mated to a black snake, and a large number of F1progeny were obtained, all of which were brown. When the F1 snakes were mated to one another, they produced 100 brown offspring, 25 orange, 22 black, and 13 albino. a. What are the genotypes of the F1 snakes

The correct answer is - OoBb

Explanation:

As it is given that:

O- B- snakes = brown

O- bb = orange

oo B = black

oo bb = albino

And here, the cross between an orange snake and black snake which means:

P0 : ooBB × OObb

offspring of f1 would be =

F1 : OoBb

self cross of f1 offsprings

F2 : OoBb × OoBb

Gametes  OB     Ob        oB           ob

OB OOBB OOBbOoBBOoBb

Ob OOBb OObbOoBbOobb

oBOoBBOoBbooBBooBb

obOoBbOobbooBboobb

here we get approximately similar as Phenotypic ratio as mention in question- 9 : 3 : 3 : 1 or 100:25:22:13

Thus, the correct answer would be: OoBb

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest

cell regulation is conducted by special proteins.