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The nurse is teaching the parents of an infant at risk for heart failure signs to monitor at home. Which signs should prompt the parent to call the provider or bring the infant in? (Select all that apply)

Closely related species are similar to each other because they

Reduction of chromosome number by half occurs during

Natural selection usually operates at the level of the

How can ancestral characters be distinguished from derived characters?

When all females have high fecundity, a population can be driven to extinction. A population in which all females have high fecundity occurs because of

The alleles that are carried by an individual for a particular gene make up the __________, while the visual characteristics of those alleles is the __________.

During 1976 on the Galápagos Island of Daphne Major, Peter and Rosemary Grant found evidence of natural selection by adaptation when they observed that

When can we say a population has reached a point of fixation?

In humans, brown eyes (B) are a dominant trait, while blue eyes (b) are a recessive trait. Would a parent with blue eyes be able to have a child who also has blue eyes?