Question

A pea plant heterozygous for plant height, pod shape, and flower color was selfed. The progeny consisted of 272 tall, inflated pods, purple flowers; 92 tall, inflated, white flowers; 88 tall, flat pods, purple; 93 dwarf, inflated, purple; 35 tall, flat, white; 31 dwarf, inflated, white; 29 dwarf, flat, purple; 11 dwarf, flat, white. Which alleles are dominant in this cross?

Answer 1

The dominant alleles in this cross are tall, inflated, and purple.

Step-by-step explanation:

In this cross, the dominant alleles can be determined by analyzing the traits that appear in the offspring. By looking at the progeny, we can see that tall plants, inflated pods, and purple flowers are the most common traits. Therefore, the dominant alleles for plant height, pod shape, and flower color are tall, inflated, and purple respectively.

Answer 2

Tall , Inflated and Purple are dominant

Step-by-step explanation:

The given phenotypical count is as follows -

Tall, inflated pods, purple flowers-
`272`

Tall, inflated, white flowers -
`92`

Tall, flat pods, purple -
`88`

Dwarf, inflated, purple-
`93`

Tall, flat, white -
`35`

Dwarf, inflated, white-
`31`

Dwarf, flat, purple-
`29`

Dwarf, flat, white-
`11`

Total number of species

`272+92+88+93+35+31+29+11\\= 651`

Let Trepresents tall allele and t represent dwarf allele , P represents allele for purple flower and p represents allele for white flower , I represents alleles for inflated flower and i represents allele for

Phenotypical ratio

Tall, inflated pods, purple flowers- TTIIPP

Tall, inflated, white flowers - TTIIpp

Tall, flat pods, purple - TTiiPP

Dwarf, inflated, purple- ttIIPP

Tall, flat, white - TTiipp

Dwarf, inflated, white- ttIIpp

Dwarf, flat, purple- ttiiPP

Dwarf, flat, white- ttiipp

Hence, Tall , Inflated and Purple are dominant allele