Pea seed color is controlled by one gene (Y for yellow, y for green) and seed texture is controlled by another gene on a different chromosome (S for round, s for wrinkled). How would you write the genotype of a green wrinkled seed? O yyss
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Suppose you cross a pea plant with yellow smooth seeds with one that has green wrinkled seeds. You examine the seeds of 967 offspring and find that some have yellow smooth seeds and some have yellow wrinkled seeds but no green seeds of either type show up. What is the genotype of the yellow-seeded parent? (Y = yellow; y = green; S = smooth; s = wrinkled)
Jackson M.
In peas, the wrinkled seed phenotype is recessive to the smooth seed phenotype. Also, green seed color is recessive to yellow seed color. Imagine a Punnett square for a dihybrid cross between two individuals that are heterozygous for both genes. Use R and r to designate the alleles for seed shape and Y and y to designate the alleles for seed color. List the genotypes of the two parents using these four letters. Write the answer as we did in class, e.g. Tt
Jenny W.
In pea plants, seed shape and seed color are controlled by genes located on different chromosomes. Seeds may be round (R) or wrinkled (r), with the allele for round seeds being dominant. Alleles for seed color are yellow and green, with the green allele (y) recessive to the yellow (Y) allele. If you cross an individual that is homozygous round and yellow with an individual that is homozygous for wrinkled and green, what is the genotype of the F1 individuals? Set up a Punnett square for the dihybrid cross.
Suman K.
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