A __________ is a hybrid, with two nonidentical alleles (Aa). Fill in the blank(s) with the appropriate word(s)


ANS: heterozygote PTS: 1 DIF: Easy

Biology & Microbiology

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Which of the following structures help to increase the surface area for nutrient absorption in the small intestines?

A. villi and microvilli B. villi C. microvilli D. tight junctions E. villi, microvilli, and tight junctions

Biology & Microbiology

We know that from their mother's milk, infants gain proteins called antibodies that protect them from specific germs. We also know that proteins will eventually be broken down by a person's digestive system

How is it that these antibodies can get into the bloodstream of the breast-feeding infant intact? Use only the information from this chapter.

Biology & Microbiology

What is not a common ecosystem service of estuaries, mangroves, AND salt marshes?

Biology & Microbiology

This lymph organ is responsible for producing red and white blood cells and platelets. 

A. thymus B. red bone marrow C. spleen D. lymph nodes

Biology & Microbiology