In close comparisons, external fertilization often yields more offspring than does internal fertilization. However, internal fertilization typically offers the advantage that _____
A) it requires less time and energy to be devoted to reproduction
B) the smaller number of offspring produced often receive a greater amount of parental investment
C) it permits the most rapid population increase
D) it requires expression of fewer genes and maximizes genetic stability
B
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The mitochondria is an organelle responsible for _____.
Fill in the blank(s) with the appropriate word(s).
Dialysis tubing serves as a __________ for the osmosis experiment.
Fill in the blank(s) with the appropriate word(s).
Which mutation would have the greatest likelihood of being retained in the gene pool?
a) A point mutation in the exon of a gene b) A point mutation in a non-coding region of DNA c) A translocation event that swaps the arms of two chromosomes d) A missense mutation that prematurely shortens the length of a translated peptide
Genes that are located on the same chromosome and are close together:
A. always segregate from one another during division. B. may not assort independently of each other. C. are always located on autosomes. D. are usually clustered on the Y chromosome. E. are never located on the X chromosome.