In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of two red eyed heterozygous flies (Rr)?
2007-03-12 14:17:35 · 2 answers · asked by fishcantswim 5 in Education & Reference ➔ Homework Help
To figure this out on your own for a test or quiz you should make a chart.
R l r
Rl RR Rr
r l Rr rr
It's kinda hard to see, but put one of the parents genes on the top and the other parents genes on the side. Then take the first letter of one gene and the first letter of the other gene and put it together. The sencond letter of the first parent and the first letter of the second parent and so forth. Just remember that the upper case letter is always first.
The answer to your question is RR, Rr, and rr.
2007-03-12 14:24:47 · answer #1 · answered by angelgurl13191 2 · 0⤊ 0⤋
75% dominant Red eyes, 25% sepia eyes: RR, Rr, Rr, rr
2007-03-12 21:20:44 · answer #2 · answered by xo_preciouscharm 2 · 0⤊ 0⤋