Which of the following would be a gamete?
a) sperm cell
b) bone cell
c) muscle cell
d) liver cell
Ans: a) sperm cell
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Reciprocal translocations can affect gene dosage because:
A. the genes involved in the translocation are nonfunctional. B. the two chromosomes involved in the translocation may not assort together during meiosis. C. the two chromosomes involved in the translocation always assort together during meiosis. D. reciprocal translocation involves the duplication of one set of genes and the deletion of another set of genes. E. none of these
How do eukaryotic cells maintain underwound DNA?
A. They have a topoisomerase that can introduce negative supercoils. B. They can introduce negative supercoils by wrapping the DNA around proteins. C. They only relax the positive supercoils that form during transcription and let the negative ones accumulate. D. All of these choices are correct. E. None of these choices is correct.
Under which condition will a population experience growth?
A. when N equals K B. when N is less than K C. when dN/dt equals zero D. when r equals zero E. when N equals zero
The risk of cancer can be reduced by ________
A) decreasing fruit intake because fruits can be carcinogenic B) smoking more because nicotine can kill cancerous cells C) avoiding unnecessary medical x-rays D) increasing saturated fats in the diet