Question

Which of Mendel’s laws says the separation of one pair of alleles into gametes does not impact the separation of a second pair of alleles into gametes

Answer 1

Answer:-

Law of independent assortment

Explanation:-

Considering two different genes that affect two different characters, Mendel's Law of Independent Assortment states that the alleles of one gene would be transmitted into gametes independently of the other, thereby, providing all alleles an equal chance of producing all possible sets of recombinant (non-parental) offsprings. 

Consider a dihybrid cross between two characters, say size of the pea plant and the shape of the seed formed. The F1 offsprings are all Tall and Round, both of which are dominant characters.

The F2 parents, i.e. Heterozygous dominant for both genes produce gametes which cross to form new phenotypes ( tall, wrinkled and dwarf,round) along with the parental phenotypes. This shows the while the alleles for tall and round genes were being distributed at the time of gamete formation the transmission of either of them did not affected the other.   

The dihybrid cross involved here is:-

Hope this answers your question.