Your grandmother has a rare disease for which a new genetic test has just been developed. If you are interested in a genetic test to determine whether you are affected, which of the following would you need to know to best interpret your test?
A. If you have one or two copies of a
dominant allele
B. Your father's genotype
C. The penetrance of disease in people of
your genotype
D. The degree of variable expressivity if you
lack a copy of the affected allele
C
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Fertilization of human eggs usually takes place in the _____
A) ovary B) uterus C) vagina D) oviduct E) cervix
How many times must the centrosomes replicate in order for meiosis to occur?
A. once B. twice C. four times D. Centrosomes do not replicate.
There are greenhouse gases other than CO2, including methane (CH4) and nitrous oxide (N2O), which have potential to influence changes in Earth's climate
Compare the graphs shown below measuring CO2 levels and N2O levels in the atmosphere between 1978 and 2010. CO2 plays a role in the carbon cycle, whereas N2O is a product of the nitrogen cycle. The latter results primarily from agricultural practices that utilize nitrogen-based fertilizers. Because N2O stays in the atmosphere for about 120 years before undergoing a biochemical conversion or being removed by a reservoir, the impact of one pound of N2O on the warming of Earth's atmosphere is over 300 times that of the equivalent amount of CO2 http://www.epa.gov http://www.epa.gov. Thus, it becomes important to understand atmospheric gas trends and take these results into account when making decisions about human activities detrimental to Earth's climate. Reference: Ref 25-6 While both graphs show an upward trend, N2O levels (right panel) do not oscillate annually like CO2 levels (left panel). What may account for this difference? Select all plausible choices. What will be an ideal response?
Keratin is an example of a ________ protein
Fill in the blank(s) with correct word