in peas, the allele for tall stems (t) is dominant to that for dwarf stems (t), and the allele for axial flowers (a) is dominant to that for terminal flowers (a). a plant of unknown genotype (plant x) with tall stems and axial flowers is crossed with a plant (plant y) with dwarf stems and terminal flowers. among the offspring are: 35 plants with tall stems and axial flowers 34 plants with tall stems and terminal flowers 35 plants with short stems and axial flowers 37 plants with short stems and terminal flowers what is the genotype for plant x?

Respuesta :

The axial flower (A) and tallness (T) alleles are dominant over the terminal flower (A) and dwarfism (T) alleles, respectively.

Since only homozygous genotypes display recessive features, the genotype of a dwarf parent with the terminal blossom is "ttaa". The dominant parent must be heterozygous in order to allow the expression of a recessive allele in the following generation in order for the progeny to have both axial and terminal flowers. The tall plant with axial flower now has the genotype "TTAa."  There are only two phenotypes that can exist in pea plants if the red allele is dominant and the white allele is recessive. The red phenotype will be present in both the red-red and red-white genotypes, while the white phenotype will be present in the white-white genotype.

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