Question

Use the punnett squares below to model each parent combination after filling in each Punnett square predict then percentages of black and white offspring

Answer 1

The provided question is incomplete as it lacks the combinations of parent as metion in the question, however the complete question is attached as the image.

Answer:

There are two parent combinations that are :

1. heterozygous black Ff cross with heterozygous black Ff

2. heterozygous black Ff cross with white ff

Explanation:

1. in first combination the each parent will produce F and f gametes, as it is shown as Capital F so it will be dominant over f as per the rule. so the cross can be shown as :

    F      f

F  FF    Ff

f  Ff     ff

where, FF are black Ff black and ff white offspring. As there is clearly 3 black offspring over one white spring so the ratio is 3:1 or 75% chances of black and 25% chances of white offspring (phenotype).

2. in second combination there would be F and f gametes for black parent and f and f for white parent, thus the offsprig would be :

    F     f

f   Ff    ff

f   Ff    ff

As, there is two black and two white springs are produced than the ratio would be 2:2 or 50% chances of each white offspring and black offspring (phenotype)