186k views
3 votes
One trait a plant can have is either red leaves (R) or brown leaves (r). Another trait is tall stems (T) or short stems (t). A plant used in a dihybrid cross has the genotype RrTt. What is the phenotype of this plant?

User Beeef
by
8.0k points

2 Answers

5 votes

Answer:

Red leaves, tall stem

User Reeebuuk
by
7.9k points
1 vote
The upper-case letters generally refer to a dominant allele, meaning that if it is present in the genotype, it will be present in the phenotype. Therefore, a plant with genotype RrTt has the dominant alleles for both traits, and thus expresses these genes, giving a phenotype of a (R)ed leafed plant with (T)all stems.
User Jason Marsell
by
9.1k points