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Course: Middle school biology - NGSS  > Unit 7

Lesson 5: Reproduction and genetic variation
Science
Middle school biology - NGSS
Inheritance and variation
Reproduction and genetic variation
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Problem

In a population of snails, some individuals have solid shells, and others have striped shells. The gene for shell type has two possible alleles. One allele is for a solid shell (B), and the other allele is for a striped shell (b).
A certain snail in the population has the genotype BB for the shell type trait.
Given this information, what phenotype does this snail have for the shell type trait?
Choose 1 answer: