Rank the following in order from most general to most specific:

1. gametic isolation
2. reproductive isolating mechanism
3. sperm-egg incompatibility in sea urchins
4. prezygotic isolating mechanism
A) 2, 3, 1, 4
B) 2, 4, 1, 3
C) 4, 1, 2, 3
D) 4, 2, 1, 3


B

Biology & Microbiology

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The genetic code is

A) triplet, overlapping, and not universal. B) triplet, non-overlapping, and universal. C) quarternary, overlapping, and non-universal. D) singular, non-overlapping, and universal.

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Mendel performed numerous controlled genetic crosses to obtain strains that consistently produced a single phenotype without variation. What are these strains that consistently produce the same phenotype called?

What will be an ideal response?

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Refer t o the figure. Initially, in terms of tonicity, the solution in side A with respect to the solution in side B is _____

A) hypotonic B) isotonic C) saturated D) hypertonic

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When substrate-level phosphorylation occurs, it means that

A. ATP is converted into ADP plus a phosphate group. B. ADP is converted into ATP by the addition of a phosphate group. C. NADH is converted into NAD+ plus a proton. D. NAD+ is converted into NADH.

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