In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carriers. Estimate q, the frequency of allele a, in Generation 1. Show your calculations. 

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#Question id: 8705

#Unit 9. Diversity of Life Forms

If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

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#Question id: 23891

#Unit 13. Methods in Biology

Which of the following is (are) used both in the polymerase chain reaction (PCR) and in DNA sequencing?

a. single-stranded DNA primers

b. deoxynucleotide triphosphates (dNTPs)

c. dideoxynucleotide triphosphates (ddNTPs)

d. DNA polymerase

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#Question id: 1376

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is NOT TRUE about gap junctions?

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#Question id: 4134

#Unit 3. Fundamental Processes

The enzyme that attaches an amino acid to a tRNA (aminoacyl-tRNA synthetase):

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#Question id: 5803

#Unit 8. Inheritance Biology

The mutation which causes sickle cell anemia in humans: