The endoplasmic reticulum, Golgi body, and other membranous organelles of cells might have formed by numerous infoldings of the cell's outer membranes.
a. true
b. false
Answer: a. true
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Paland and Lynch showed that sexual populations possessed fewer deleterious mutations than asexual populations. These results supported the hypothesis that
A. sexual reproduction prevents fertilization with gametes carrying damaged alleles. B. sexual reproduction produces fewer random mutations than asexual reproduction. C. asexual reproduction favors the retention of deleterious genes because it increases genetic diversity. D. the reassorting of alleles in each generation of a sexually reproducing population allows for the elimination of some detrimental alleles. E. sexual strains are healthier due to genetic diversity and thus acquire fewer mutations.
A genetic signature for positive selection is
A) a gene sequence present in humans and other primates, but with at least one amino acid difference in the encoded protein in humans. B) a gene that is unique to humans. C) a gene sequence present in humans and other primates, but with no amino acid sequence differences. D) a gene that encodes a protein that makes the individual more sexually attractive.
The cells that the body uses for rapid communication and control are ____
a. dendrites b. glial c. myocytes d. neurons e. chondrocytes
Contrast the mechanisms of dosage compensation in humans with those found in insects like Drosophila
What will be an ideal response?