In succession, which type of environmental change occurs when the physical environment changes, such as an increase in temperature or salinity?
A) allopatric
B) allogenic
C) autozygous
D) autogenic
B
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All of the glands in the vertebrate endocrine system are regulated by the
A. hypothalamus and pons. B. hypothalamus and pituitary gland. C. cerebrum and medulla oblongata. D. pineal gland and pituitary gland. E. cerebellum and pituitary gland.
During a polymerase chain reaction,
a. a DNA template is mixed with primers, nucleotides, and Taq polymerase. b. the sample is heated in order to allow the two strands of DNA to separate completely. c. some of the primers base-pair with template DNA. d. Taq polymerase performs DNA synthesis from the primers. e. all of these occur
How many ATP molecules (net yield) are
produced per molecule of glucose degraded during glycolysis? a. 1 b. 2 c. 4 d. 36 e. 38
An allele of RNA polymerase in Drosophila demonstrates a recessive lethal inheritance pattern. Which of the following is true?
A) Homozygous lethal genes will always demonstrate a gain of function pattern. B) The threshold effect is not seen in recessive lethality. C) Two homozygous recessive parents will have 100% homozygous offspring. D) Homozygous recessive offspring will never be seen. E) Two heterozygotes will have offspring with a 2:1 pattern.