If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Introduction to heredity

Problem

In chickens, the allele for black feathers (A) is dominant over the allele for red feathers (a).
Which of the following pairs of terms are correctly matched?
Choose 1 answer:
Stuck?
Stuck?