Which of the following bonds are easy to open in the DNA molecule?
A. the hydrogen bonds between the sulfate bases
B. the hydrogen bonds between the nucleotide bases
C. the chemical bonds between the phosphates
D. the chemical bonds between the sugars
Answer: B
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Monkey fossils from the early Miocene are quite common
Indicate whether the statement is true or false
Two people (BOTH heterozygotes) are able to taste a chemical substance called PTC. The ability to taste PTC is caused by a dominant allele (T). The inability to taste PTC is caused by a recessive allele (t). What proportion of their children would be expected to have the tt genotype?
a. 3/4 b. 1/2 c. All d. 1/4 e. 2/3
Mendelian traits
a. are governed by several genetic loci. b. are more likely to have identifiable loci than polygenic traits. c. have continuous distributions. d. can be described by statistics such as the average and standard deviation. e. have phenotypic expressions that are often the result of genetic and environmental interactions.
The Hua of Papua New Guinea believe that differences between men and women are the result of differing amounts of a life-giving substance called nu. As a result of this belief,
a. sexual intercourse is considered dangerous for men because it transfers nu to women. b. women must serve food to men so that their nu may be passed to the men. c. men and women become more different from each other over time as women acquire more nu. d. women have less ?nu? than men, making women moister.