Suppose allele R of the garden pea confers a dominant round pea phenotype and th

Question

Suppose allele R of the garden pea confers a dominant round pea phenotype and the recessive r confers a wrinkled phenotype. I have a non-invasive DNA test that allows me to determine whether gamete(haploid) carries a R or r allele. You cross two R gametes. Under what circumstances will you get progeny that produce r gametes? One gamete was heterozygous. Both gametes are heterozygous. One gamete is the progeny of a wrinkled(r) plants. Both gametes are the progeny of wrinkled(r) plants A. B. C. D. E. You will never get wrinkled(r) gamete from progeny of this cross.

Explanation / Answer

if both R alleles are used then there are no chance that progeny will carry r allele. option E is correct for given situation.

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