Which letter in the above figure represents breast

cancer?
a. A rounded cells
b. B irregular shaped cells
c. both A and B
d. neither A or B
e. this is prostate tissue


Answer: b

Biology & Microbiology

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The site-specific recombination reaction outcome depends on the location and orientation of the target sites. Which of the following is a possible outcome?

A. Recombination between two oppositely oriented sites on the same DNA molecule will result in a deletion. B. Recombination between two oppositely oriented sites on the same DNA molecule will result in an inversion. C. Recombination between two oppositely oriented sites on the same DNA molecule will result in an insertion. D. Recombination between two sites oriented in the same direction on the same DNA molecule will result in an inversion. E. Recombination between two sites oriented in the same direction on different DNA molecules will result in a deletion.

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A. is only used as the start codon. B. codes for methionine. C. determines the reading frame. D. is one of the stop codons. E. codes for methionine AND determines the reading frame.

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Why do X-linked disorders affect males more often than females?

a. The disorders are lethal in female embryos so affected females are unseen b. Females that carry the trait usually have one functional allele. c. Carrier mothers pass the mutated allele to all their sons. d. Affected fathers pass the X-linked recessive allele to all their sons.

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Angiogenesis: critical role in the growth and spread of cancer

a. true b. false

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