In pea plants, the allele for purple flowers, P, is dominant over the allele for white flowers, p. Which conclusion about phenotype and genotype is possible?
A. If a plant has purple flowers, then its genotype must be Pp.
B. If a plant has purple flowers, then its genotype must be PP.
C. If a plant has white flowers, then its genotype must be pp.
D. If a plant has white flowers, then its genotype must be Pp.
B. If a plant has purple flowers, then its genotype must be PP.
What is a phenotype of an organism?
A. an observable trait
B. a combination of alleles
C. a structure that carries genetic information
D. a section of DNA
A. an observable trait
What is an allele?
A. a form of a gene
B. the trait a gene controls
C. a dominant form of a gene
D. the location of a gene on a chromosome
A. a form of a gene
Use the table to answer the question.
Plant A Plant B Plant C
tt TT Tt
The table shows the genotypes of three pea plants for the allele for height. Which prediction about the three plants is the most reasonable?
A. Plant C will be the shortest.
B. Plant A and Plant C will have similar heights.
C. Plant B and Plant C will have similar heights.
D. Plant A will be the tallest.