The genetic distance between A and B is 10 cm .if a allelic combinatio...
Explanation:
Genetic Distance:
The genetic distance between two genes refers to the distance between them on a chromosome. It is measured in centimorgans (cM). The closer the genes are to each other, the lower the genetic distance.
Crossing of Allelic Combinations:
When two allelic combinations are crossed, the resulting gametes will have different combinations of alleles. In this case, the allelic combination Ab is crossed with aB allele combination. The resulting gametes will have the following combinations of alleles: AB, Ab, aB, and ab.
F1 Individual:
When the gametes are combined, the resulting F1 individual will have a combination of alleles from each parent. The percentage of gametes with the allele AB can be calculated using the Punnett square.
Punnett Square:
| | A | b |
|---|---|---|
| a | Aa | ab |
| B | aB | Ab |
There are four possible gametes: AB, Ab, aB, and ab. The percentage of gametes with the allele AB is 25% (1 out of 4).
Conclusion:
In conclusion, the percentage of gametes with the allele AB by an F1 individual is 25%. This can be calculated using the Punnett square.