Need help on 1&2 ASAP! Will give brainliest

#1. 25 percent of the offspring would be white

Explanation

heterozygous means that both the parents genotype would be Bb. If you make a Punnett square out of this you end up with 75 percent brown gerbils and 25 percent white because if the B gene is present at all the gerbil will be brown and only 1/4 combinations is bb.

#2. 75

Explanation

We already know from the previous question that 25% of the offspring will be white. For this question we just have to take 25% of three hundred. So multiply 300 time 0.25 which equals 75.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!