gonads begin to develop
What will be an ideal response?
5-6 weeks after fertilization
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When an environmental stimulus is received, the signal is usually transmitted through three types of nerves cells. In which order is the signal transmitted through these cells?
A. sensory neurons, motor neurons, interneurons B. motor neurons, sensory neurons, interneurons C. sensory neurons, interneurons, motor neurons D. interneurons, sensory neurons, motor neurons E. motor neurons, interneurons, sensory neurons
The North American bison was hunted to near extinction in the 1800s, and has since recovered, but with decreased genetic diversity. This is an example of
A. gene flow. B. increased mutation rate. C. a bottleneck effect. D. natural selection. E. a founder effect.
Typically, blastocyst implantation in the uterus takes place at day ___
A. 1-2 D. 5 B. 3 E. 6-7 C. 4
The coefficient of inbreeding (F) can be used to estimate the proportion of loci that are __________
A) fixed in a population B) homozygous identical by descent C) heterozygous by descent D) lethal alleles E) recessive