Epigenetic effects cause _____ behavior without altering _____.
A. instinctive; oxytocin level
B. instinctive; the genome
C. conditioned; the genome
D. heritable changes in; DNA sequence
E. temporary changes in; RNA sequence
Answer: D
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Consider the DNA sequence GATTACA. If the strand with this sequence forms a double helix with
another DNA strand, the sequence on the other strand should be ____.
a. TCGGCAC b. GATTACA c. ACATTAG d. GTGCCGA e. CTAATGT
A population that maintains several different phenotypes of the same trait displays ________
Fill in the blank(s) with correct word
Which of the following assumptions or observations is not part of Darwin's idea of natural selection?
A) Whether an organism survives and reproduces is almost entirely a matter of random chance. B) Heritable traits that promote successful reproduction should gradually become more common in a population. C) Populations produce more offspring than their environment can support. D) Organisms compete for limited resources.
Which of the following is NOT used as evidence that mitochondria and chloroplasts may have arisen according to the endosymbiotic relationship?
a. They have their own membranes and are the same size as bacteria. b. They possess their own type of DNA different from that found in the nucleus. c. They can live an independent existence when isolated from a cell. d. They possess their own ribosomes.