For two genes on two different chromosomes… 1) If a parent has the same allele a

Question

For two genes on two different chromosomes…

1) If a parent has the same allele at both copies of both genes, how many different gametes can they make?

2) If a parent has the same allele at both copies of one gene and different alleles at the two copies of the other gene, how many different gametes can they make?

3) If the parent had different alleles at the two copies of both genes, how many different gametes can they make?

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Explanation / Answer

Here X and Y are genes wich in diploid are double ( either same or different for example XXYY, XxYY, XXYyetc. ) and in haploid just once (XY,xY,Xy etc.). In fertilisation the both cells( gametes) "fuse" together to get haploid again ( like when xy and XY haploid cells and afther fertilisation XxYy) 1) only one, the 2 same divided ( XX--> X and X) doesent matter which is in wich. 2) 2. ( XXYy) divides into maksimum amount of haploid as follows ( XY, Xy) 3) 4 diploid looks like ( XxYy) the possible haploid genomes are XY,Xy,xY,xy. if need more info just comment, I'l try to answer in comment :))

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