In a dihybrid cross AA bb × aa BB, what proportion of the F2 offspring is expected to be homozygous for at least one gene?

A) 1/4
B) 1/2
C) 3/4
D) All are homozygotes.
E) None are homozygotes.


C) 3/4

Biology & Microbiology

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What are the two clades of the protostomes?

a. Eumetazoa and Metazoa b. Protostomia and Bilateria c. Bilateria and Deutersostomia d. Lophotrochozoa and Ecdysozoa e. Lophotrochozoa and Deutrerostomia

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In the most complete sense, "proteomics" refers to the large-scale analysis of

a. cell proteins. b. protein localization c. large-scale construction of protein interaction networks. d. All of the above

Biology & Microbiology

Sequencing of the HIV-1 genome revealed that it is most closely related to ____.

A. simian immunodeficiency virus B. feline immunodeficiency virus C. bovine immunodeficiency virus D. hepatitis B E. H1N1

Biology & Microbiology

________ are a set of criteria used to identify and link a specific microorganism as the etiologic agent of a new infectious disease.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology