Assuming a typical monohybrid cross in which one allele is completely dominant to the other, what ratio is expected if the F1s are crossed?
What will be an ideal response?
3:1
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Neurons share three features with almost every other type of cell, there are
a. outer membrane, axons and nucleus. b. nucleus, mitochondria and dendrites. c. cell body, nucleus and axons. d. outer membrane, cell body and mitochondria.
Which statement about the PiZ allele is not true? Consult Figure 15.2 if necessary
A. The PiZ allele is common in populations of European descent. B. One out of 30 Caucasians in the United States is heterozygous for the PiZ allele. C. Individuals homozygous for the PiZ allele have normal lung elasticity. D. Nonsmokers who are homozygous for the PiZ allele have a life-expectancy of 65 years. E. Smokers who are homozygous for the PiZ allele have a life-expectancy of 40 years.
If the frequency of the recessive allele is 30 percent,
the frequency of the heterozygous carrier is what percent? a. 42 b. 9 c. 27 d. 60 e. 80
When measuring volume using a graduated cylinder, which of the following is a correct statement?
a. Ignore the meniscus b. Measure the volume at the top of the meniscus curve c. Measure the volume in the middle of the meniscus curve d. Measure the volume at the bottom of the meniscus curve