What percentage of F2 generation plants from a spherical seed cross (Ss x Ss) will have dented seeds?

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Multiple Choice

What percentage of F2 generation plants from a spherical seed cross (Ss x Ss) will have dented seeds?

To determine the percentage of F2 generation plants with dented seeds from a cross where both parents have spherical seeds (Ss x Ss), we first need to understand the genetics involved. In this scenario, S represents the allele for spherical seeds, which is dominant, while s represents the allele for dented seeds, which is recessive. Therefore, the genotypes of the plants can be categorized as follows: - SS - homozygous dominant (spherical seeds) - Ss - heterozygous (spherical seeds) - ss - homozygous recessive (dented seeds) When two heterozygous plants (Ss) are crossed, the offspring can be determined using a Punnett square. The possible combinations from this cross will be: - SS (spherical) - Ss (spherical) - Ss (spherical) - ss (dented) Counting these combinations, we find: - 1 SS - 2 Ss - 1 ss This means there is one genotype with dented seeds (ss) out of a total of four genotypes. To find the percentage of plants with dented seeds in the F2 generation, we calculate the fraction of offspring with the dented seed genotype: 1 (

To determine the percentage of F2 generation plants with dented seeds from a cross where both parents have spherical seeds (Ss x Ss), we first need to understand the genetics involved.

In this scenario, S represents the allele for spherical seeds, which is dominant, while s represents the allele for dented seeds, which is recessive. Therefore, the genotypes of the plants can be categorized as follows:

  • SS - homozygous dominant (spherical seeds)

  • Ss - heterozygous (spherical seeds)

  • ss - homozygous recessive (dented seeds)

When two heterozygous plants (Ss) are crossed, the offspring can be determined using a Punnett square. The possible combinations from this cross will be:

  • SS (spherical)

  • Ss (spherical)

  • Ss (spherical)

  • ss (dented)

Counting these combinations, we find:

  • 1 SS

  • 2 Ss

  • 1 ss

This means there is one genotype with dented seeds (ss) out of a total of four genotypes. To find the percentage of plants with dented seeds in the F2 generation, we calculate the fraction of offspring with the dented seed genotype:

1 (

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