Question

The cross Lpq/lPQ x lpq/lpq is carried out and the L gene is found to be in the middle. what would be the geneotype of the double crossover gametes in this cross?

Answer 1

Answer:

•   PLQ (Double Recombinant gamete)
•   plq (Double Recombinant gamete)  

Explanation:

Cross:

Parentals) pLq/PlQ x plq/plq

Gametes) pLq (Parental)          plq (Parental)

                PlQ (Parental)

                pLQ (Recomb)

                plQ (Recomb)

                PLq (Recomb)

                Plq (Recomb)

                PLQ (Double Recom)

                plq (Double Recom)  

Parentals)

• p----L-----q
• P.....l........Q

Simple recombinant)

Recombination occurs between p and L, OR between l and q.

• P----L-----q
• p......l.....Q

• p----L-----Q
• P.....l........q

Double recombinant)

Recombination occurs between p and L, AND between l and q.

• p-----l------q
• P......L.......Q