Respuesta :

If two homozygous plants with contrasting traits are crossed, the expected genotypes for the offspring will be heterozygous. The dominant trait would be expressed, but they'd be carriers for the recessive trait.



Histrionicus

The two same allele plants with contrasting traits are crossed, the expected genotypes for the offspring - heterozygous with the dominant phenotype.

The plants will have the same allele genotype for both of their chromosomes. In other words, Let assume "b" is a recessive allele for a trait and B for a dominant trait then, one plant will have the genotype "BB", and the other will have "bb."

  • Now, there will only be an expected genotype with these, and that would be "Bb."
  • To find this, you must put the genotypes in a punnet square and calculate the different genotypes.

    T     T

t    Tt    Tt

t    Tt     Tt

  • The B is dominant over the b, so in this case, the offspring plant will have a heterozygous for both traits

Thus, The two same allele plants with contrasting traits are crossed, the expected genotypes for the offspring - heterozygous with the dominant phenotype.

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