Pea plants can have yellow seeds or green seeds. Which conclusion about the meaning of Y is correct if the allele combination Yy is for yellow seeds?
A. yellow and dominant
B. green and recessive
C. yellow and recessive
D. green and dominant

A. yellow is dominant

Explanation:

The uppercase letter always refers to the dominant allele, if it is heterozygous the uppercase letter will be the phenotype of the organism. Since the question states the phenotype is yellow you can conclude that the Y allele is yellow and the other allele is green.

The answer to this question is: Yellow and Dominant

Explanation:

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products