Question

Assume that plant height and flower size in Four O'Clock plants display antogonistic phenotypes. Four O'Clock plants can be tall or short and the flowers can be large or small. Assume each trait is governed by alleles of a single gene and that each follows Mendel’s first and second laws. You start with two pure breeding strains, one that is tall with large flowers and a second that is short with small flowers. You cross these two strains to each other to generate F1 plants. You self-cross an F1 plant and grow 342 of the resulting seeds into plants. You find that 195 plants are short with large flowers, 62 plants are short with small flowers, 59 plants are tall with large flowers, and 26 plants are tall with small flowers.

You take each of the 26 plants that are tall with small flowers, self cross each of them and examine thousands of progeny plants. Among those thousands of plants you would expect to observe plants with which phenotypes? (Select 'Yes' or 'No' for each)

Yes No  Tall with large flowers
Yes No  Tall with small flowers
Yes No  Short with small flowers
Yes No  Medium height with medium size flowers
Yes No  Short with large flowers
Yes No  Can't tell from the information provided

Answer 1

Answers

No  Tall with large flowers
Yes   Tall with small flowers
No  Short with small flowers
No  Medium height with medium size flowers
No  Short with large flowers
No  Can't tell from the information provided

t - Tall and T- short / L - Large flower and s - small flower

195 short with large flowers, 62 short with small flowers, 59 tall with large flowers, and 26 tall with small flowers.

9:3:3:1. In this tall with small flowers is recessive character because it comes in the ratio of 1.

So, if recessive self cross it offspring also recessive.