Heterozygous for chlorophyll?

Question

Please help!

Question:

Farmer Phillip Morris crosses two tobacco plants that are heterozygous for chlorophyll.

What are the phenotypes for these plants? What are the genotypes for these plants?

What is this kind of cross called? What is the phenotypic and genotypic ratio of the offspring?

Thoughts:

So, the plants are both Cc, correct? Then where do I take this from here? I understand phenotype and genotype, but I am confused on how to proceed.

Is this a dihybrid cross? If so then would the phenotypic ratio be 9:3:3:1?

Answer 1

yes they are Cc cross from here you need to do a punnet square which will result in 50% Cc , 25% CC and 25% cc these are the geneotypes, since you know geneotype and phenotype you can figure out the rest pretty easy

Answer 2

The plants are both Cc, but there is no dihybrid crossing because you are only crossing for one trait: chlorophyll. This does not really make sense because all the chloroplasts contain chlorophyll already anyway.

Phenotype refers to the behaviour or looks of a crossing outcome.