how many different gamete types can an individual with genotype aabbccdd make?
How many different gamete types can an individual with genotype aabbccdd make?
Answer: To determine the number of different gamete types that an individual can produce, we look at the genotype and consider the genetic combinations that can be passed on through gametes.
For a genotype like aabbccdd
, each gene pair (aa, bb, cc, dd) is homozygous, meaning both alleles are the same. When a gene pair is homozygous, only one type of allele can be passed on to the gametes from that gene pair.
Here’s the breakdown:
- Gene pair
aa
can only contributea
. - Gene pair
bb
can only contributeb
. - Gene pair
cc
can only contributec
. - Gene pair
dd
can only contributed
.
Since each gene pair contributes only one possible type of allele, there is only one combination that can be produced: abcd
.
Thus, the individual with the genotype aabbccdd
can make only one type of gamete.
Summary: An individual with the genotype aabbccdd
can produce only one type of gamete, abcd
, because each gene pair is homozygous and contributes only one allele type.