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In tomatoes, red fruit (R) is dominant over yellow fruit (r). A plant that is homozygous for red fruit is crossed with a plant that has yellow fruit. What will be the genotype and phenotype of the offspring?

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jessica112776
I believe it would be Rr as the red is dominant over the yellow as they are the recessive gene creating the Rr.
luisvaschetto

If a dominant red fruit (RR) plant is crossed with a recessive over yellow fruit (rr), then the phenotype will be red fruit and the genotype Rr. It is a case of complete dominance.

  • In diploid organisms (2n), an individual is homo-zygous when it carries two copies of the same gene variant (i.e., the same allele).

  • Moreover, an individual is heterozygous when it carries two different alleles for the same gene locus.

  • In complete dominance, the dominant allele completely masks the expression of the recessive allele in heterozygous individuals.

In conclusion, if a dominant red fruit (RR) plant is crossed with a recessive over yellow fruit (rr), then the phenotype will be red fruit and the genotype Rr. It is a case of complete dominance.

Learn more about complete dominance here:

https://brainly.com/question/9881046

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