Consider a population of 10,000 pigeons that was founded by a population in which no alleles were identical by descent. After 30 generations in this Wright–Fisher population, what will be the expected identity by descent?
What will be an ideal response?
ANS:
F30 = 1-(1-1/20,000)30 = 0.0015
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In a family pedigree that followed several
generations, Gaucher’s disease was found in family members every other generation and equally in males and females. Gaucher’s disease is most likely a ______ disease.
a. dominant b. recessive c. X-linked d. epistatic e. pleiotrophic
In which of the following ways has climate change impacted weather patterns in the United States?
A. Average temperatures have increased up to 1.8°F; however, these changes have been very regional, with some areas seeing increasing temperatures and others seeing decreasing temperatures. B. Average precipitation has increased by 4%; however, this has been a very regional change, with some areas seeing significant increases in rainfall and other areas seeing significant decreases in rainfall. C. Severe weather events, including droughts and flooding, have decreased in frequency. D. Geological events, including volcanoes and earthquakes have increased in frequency.
Each __________ develops into a pollen grain. Fill in the blank(s) with the appropriate word(s)
The role of the postsynaptic neuron in neural communication is to ____
a. release neurotransmitters b. use gated calcium channels c. contain synaptic vesicles d. block the action of neurotransmitters e. receive the signal from the presynaptic cell