Can someone please explain this in detail. And list the genotypes of the parents
ID: 71213 • Letter: C
Question
Can someone please explain this in detail.
And list the genotypes of the parents, F1 and F2.
Radishes may be long, round, or oval, and they may be red, white, or purple. You cross a long, white variety with a round, red one and obtain an oval, purple F1. The F2 shows nine phenotypic classes as follows: 9 long red; 15 long, purple; 19 oval, red; 32 oval, purple; 8 long, white; 16 round, purple; 8 round, white; 16 oval, white; and 9 round, red Provide a genetic explanation of these results. Include as part of your answer the genotypes of the parents, F1, and F2.Explanation / Answer
The above mentioned case is an example of co-dominance.
Since there is codominance, standard uppercase/lowercase (dominant/recessive) notation will not be used here. Simply define the "long" allele as L and the "round" allele as R. So long radishes will be LL, round radishes will be RR, and oval radishes will be LR. Now you can cross a long radish (LL) with a round radish (RR) and see that all F1 offspring will be LR (oval). A Punnett square can be used to cross two of the F1 offspring (LR x LR) and figure out the possibilities and ratios of the F2 offpsring for the second part of the question.
F1 = LLWW X RRrr
F2 = LRWr X LRWr