Why do we only see Neanderthal input in non-African genomes?
A. Neanderthals never interbred with Homo
sapiens in Africa.
B. Only mtDNA can be inherited.
C. Only Y chromosome DNA can be
inherited.
D. Neanderthals were adapted to a cold
European climate.
A
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Consider a diploid species where n=5. If an individual of this species was found to have 11 chromosomes, it would be categorized as
A. polyploid. B. aneuploid. C. tetraploid D. monosomic. E. triploid.
When a ciliate reproduces asexually by mitosis
A. The macronucleus divides into two with each new cell receiving an identical macronucleus. B. The macronucleus divides into four micronuclei with each new cell receiving two micronuclei each. C. The macronucleus doesn't divide but it goes to one new cell and the micronuclei go to the other. D. The macronuclei fuse with the micronuclei and then divide into two with each new cell receiving an identical fused nucleus.
The history of life on earth spans nearly
a. 100,000 years. b. 500,000 years. c. 100 million years d. 1 billion years. e. 4 billion years.
Compounds that inhibit receptors by preventing the natural messenger from binding are known as
A) agonists. B) arrestins. C) sildenafils. D) syndecans. E) antagonists.