If one pair of alleles exhibits simple dominance
while the other pair exhibits incomplete dominance,
the F2 phenotype produced from a cross of AA BB
with aa bb will produce a __________ ratio.
a. 1:1:1:1
b. 9:3:3:1
c. 1:4:6:4:1
d. 1:2:1
e. 3:6:3:1:2:1
Answer: e
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All of the following are mechanisms or adaptations of organisms to the arrival of colder
winter temperatures EXCEPT
a. hibernation. b. reduction in metabolic rates. c. migration. d. growth.
The neuron that releases neurotransmitters is known as ________, while the neuron that receives the neurotransmitters is knows as ________
Fill in the blank(s) with correct word
One of the direct products of deamination is urea. Indicate whether the statement is true or false
The production of red blood cells is regulated by a feedback loop involving erythropoietin. In non-disease states, the production of red blood cells is equal to the destruction of red blood cells, thus maintaining sufficient red blood cells to deliver adequate oxygen to the body's tissues. However, when the number of red blood cells decrease and oxygen levels are low, erythropoietin is produced by the liver and kidneys to increase the production of red blood cells. Is this a positive or negative feedback loop? Explain your answer.
What will be an ideal response?