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The most likely F1 will be the one that is made from 4 and 5. This is because see the map
between c and d gene. In map 1 the distance is 15 and in map 2 the distance is 20. What we know
is , the larger the distance between two genes there are more recombinants between those 2
genes. Here in map 1 the distance between c and d is 10 which means the 2 genes are more likely
to be in a shorter dstance ie they are linked. Linked genes fail to separate during meiosis and
results in lesser number of recombinants and more of parents. So here in 2x3 F1s we cannot say
that the heterozygous will replace the homozygous recessive allele. But in map2 ie F1s of 4x5,
the distance between c and d is 20, and there will be less linkage compared to F1s of 2x3 and
hence there is a chance for deletion of homozygous recessive alleles in them.
Solution
The most likely F1 will be the one that is made from 4 and 5. This is because see the map
between c and d gene. In map 1 the distance is 15 and in map 2 the distance is 20. What we know
is , the larger the distance between two genes there are more recombinants between those 2
genes. Here in map 1 the distance between c and d is 10 which means the 2 genes are more likely
to be in a shorter dstance ie they are linked. Linked genes fail to separate during meiosis and
results in lesser number of recombinants and more of parents. So here in 2x3 F1s we cannot say
that the heterozygous will replace the homozygous recessive allele. But in map2 ie F1s of 4x5,
the distance between c and d is 20, and there will be less linkage compared to F1s of 2x3 and
hence there is a chance for deletion of homozygous recessive alleles in them.

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The most likely F1 will be the one that is made from 4 and 5. This i.pdf

  • 1. The most likely F1 will be the one that is made from 4 and 5. This is because see the map between c and d gene. In map 1 the distance is 15 and in map 2 the distance is 20. What we know is , the larger the distance between two genes there are more recombinants between those 2 genes. Here in map 1 the distance between c and d is 10 which means the 2 genes are more likely to be in a shorter dstance ie they are linked. Linked genes fail to separate during meiosis and results in lesser number of recombinants and more of parents. So here in 2x3 F1s we cannot say that the heterozygous will replace the homozygous recessive allele. But in map2 ie F1s of 4x5, the distance between c and d is 20, and there will be less linkage compared to F1s of 2x3 and hence there is a chance for deletion of homozygous recessive alleles in them. Solution The most likely F1 will be the one that is made from 4 and 5. This is because see the map between c and d gene. In map 1 the distance is 15 and in map 2 the distance is 20. What we know is , the larger the distance between two genes there are more recombinants between those 2 genes. Here in map 1 the distance between c and d is 10 which means the 2 genes are more likely to be in a shorter dstance ie they are linked. Linked genes fail to separate during meiosis and results in lesser number of recombinants and more of parents. So here in 2x3 F1s we cannot say that the heterozygous will replace the homozygous recessive allele. But in map2 ie F1s of 4x5, the distance between c and d is 20, and there will be less linkage compared to F1s of 2x3 and hence there is a chance for deletion of homozygous recessive alleles in them.