Each unique combination of nucleotides on a Y chromosome constitutes a Y-chromosome:
A. mutation.
B. mutation sequence.
C. haploid mutation.
D. haploid genotype.
E. haploid sequence.
D
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Why does the burning of fossil fuels cause an imbalance within the carbon cycle? What is the consequence of this imbalance? Include a diagram of the carbon cycle to illustrate your answer
What will be an ideal response?
The four nitrogen bases that are found in the different nucleotides of DNA are
A. uracil, cytosine, guanine, and thymine. B. uracil, adenine, cytosine, and guanine. C. adenine, thymine, cytosine, and guanine. D. None of the answer choices is correct. E. adenine, thymine, cytosine, and uracil.
Due to the lack of moderate stress on the skeleton, a bedridden person is at risk of
A. rheumatoid arthritis and muscular degeneration. B. osteoarthritis and tendon damage. C. osteoporosis and muscle degeneration. D. cartilage growth and a sprain. E. anemia and cartilage degradation.
Which microbe is used to make media to grow microbes?
A. Bacteria B. Fungi C. Algae D. Protozoan