Question

Sperm from a pure breeding big brained mouse is used to fertilize the eggs of a pure breeding small brained mouse. A monohybrid cross of the F1 individuals produces 221 big brained mice and 89 small brained mice (recall that a monohybrid cross refers to selfing or crossing heterozygous F1 individuals). What is the recessive phenotype?


Small Brain or Big Brain

Answer 1

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