Kim who is heterozygus for polydactyl (6 fingers and toes) marries Tony who is homozygous normal (5 fingers and toes).
What is Kim's genotype?
What is Tony's genotype?
What is the chance of having children with 6 fingers?
Please include the Punnett Square.
let FT be for normal 5fingers and toes
&ft be 4 polydactyl.
kim gtype=ft, tony=FT
f t
F Ff Ft
T Tf Tt
1 out of four
Let P stand for a polydactyl gene and N stand for a normal gene.
Kim is PN and Tony is NN. The problem is that I don't know if P is recessive or dominant. Tony can only give N genes, So the probability of a child getting the P gene is 50%. (You can put the information in a Punnett square yourself.)
Once you know which genes are dominant or recessive, you should be able to tell the chance of having 6 fingers.
I hope this helps a little more. Thanks for asking.
To determine the genotypes of Kim and Tony, we need to understand the inheritance patterns of the polydactyl trait. In this case, let's assume that the polydactyl gene (P) is dominant over the normal gene (N). This means that a single copy of the P gene will result in polydactyly, while two copies of the N gene are needed for a normal phenotype.
Kim is heterozygous for the polydactyl gene, so her genotype is PN (one copy of the P gene and one copy of the N gene). Tony, on the other hand, is homozygous for the normal gene, so his genotype is NN (two copies of the N gene).
Now, let's determine the chance of having children with six fingers using a Punnett square. We'll represent the P gene with a capital letter and the N gene with a lowercase letter.
Kim's Gametes: P N
Tony's Gametes:
-----------------
N | PN NN
|
-----------------
The Punnett square shows that all of the offspring will inherit a copy of the P gene from Kim and a copy of the N gene from Tony. Therefore, all the children will be heterozygous for the polydactyl trait, resulting in a 100% chance of having children with six fingers.
Please note that if the polydactyl gene (P) is actually recessive, the Punnett square would look slightly different, and the chance of having children with six fingers would be different. However, without further information, we made an assumption about the dominance of the polydactyl gene.