If the 13 CODIS SSR loci are genotyped, why does each person (except identical twins) have a unique combination of SSR alleles?
A) Each SSR locus has many alleles, each with a different number of repeats.
B) SSRs have a very low mutation rate in individuals.
C) SSR inheritance follows Mendel's law of segregation.
D) Mitotic recombination results in new combinations of SSRs in different parts of an individual's body.
A) Each SSR locus has many alleles, each with a different number of repeats.
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A cytoskeleton enables eukaryotic cells to:
A. move. B. engulf other cells. C. change shape. D. All of these choices are correct.
Imagine in lemmings, that gray fur color (G) is dominant over white (g). There is another gene, called color, and individuals must have at least one color (C) allele for gray color to be expressed. A lemming that is heterozygous at both loci is crossed with a white lemming that is heterozygous for gray fur color. Which of the following is correct regarding their offspring?
A. All will be gray B. All will be white C. 3/8 will be gray, 5/8 will be white D. 1/4 will be gray, 3/4 will be white E. They will have a ratio of 9 gray:7 white
An animal that is evolved for rapid movement over the ground will have relatively ____ bones
a. heavy and thick
b. heavy c. light and thin d. light e. heavy and thin
Avogadro's number, calculated from the atomic weight of hydrogen, tells us how many atoms or molecules are in a mole
The resulting base for all calculations of moles and molarity (how many molecules are present when you weigh out a substance or measure from a stock solution) is the following: 1 g of hydrogen atoms = 6 × 1023 hydrogen atoms = 1 mole of hydrogen Sulfur has a molecular weight of 32. How many moles and atoms are there in 120 grams of sulfur? (a) 3.75 and 6 × 1023 (b) 32 and 6 × 1023 (c) 1.75 and 1.05 ×1024 (d) 3.75 and 2.25 × 1024