Use Punnett Square to determine answer?

Biology
Tutor: None Selected Time limit: 1 Day

A pea plant that is wrinkled is crossed with a pea plant that is wrinkled.

Jun 12th, 2015

Thank you for the opportunity to help you with your question!

Genotype for wrinkled pea plant is  rr

Using punnet square

          r       r

.................................

r      rr         rr

r      rr          rr


Results

Genotypes of offspring:  rr

Phenotypes of offsrping:  wrinkled

Probabilities: 100% wrinkled, 0% round


Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 12th, 2015

Do you know how to do the ratio of the genotype and phenotype?

Jun 12th, 2015

Yes..................................... 


Jun 12th, 2015

In the above case all F1 generation are rr  so you cannot express as a ratio.

Jun 12th, 2015

How can I help you?

Jun 12th, 2015

A pea plant with heterozygous inflated pod is crossed with a pea plant with constricted pod.

 Heterozygous inflated pod genotype is Ii

constricted pod genotype ii

      I              i

........................................

i     Ii            ii

i    Ii             ii

Genotypic Ratio  li : ii  = 1: 1

Phenotypic ratio 1: 1, i.e. one inflated and one constricted


Jun 12th, 2015

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