The probability of a couple having either a boy or a girl is ½. However, many families have more boys than girls and VICE VERSA. Why is the observed ratio of boys to girls in typical families different than the predicted ratio?
A. There is a large random sampling error due to the small size of families.
B. There is a small random sampling error due to the small size of families.
C. Humans are more heterozygous than is predicted by random sampling.
D. The sex of each child is determined independently.
E. Two of the answers are correct. There is a large random sampling error due to the small size of human families and the sex of each child is determined independently.
E. Two of the answers are correct. There is a large random sampling error due to the small size of human families and the sex of each child is determined independently.
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Only germ line mutations are transmitted to the progeny
A. true B. false
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a. and HIV infection from unprotected sex b. a measles infection from contact with a contagious individual c. a Staphyococcus infection from consuming contaminated food d. a Micrococcus infection resulting from a cut to the skin e. a Staphylococcus infection of a hair follicle
Proteins are polymers formed of structural units called:
A. nucleotides. B. fatty acids. C. monosaccharides. D. phosphate groups. E. amino acids.
Which of the following is a true statement concerning spores and gametes?
a. Gametes and spores are both diploid. b. Gametes and spores both fuse with other gametes and spores to produce diploid organisms. c. Gametes are haploid and spores are diploid. d. Gametes are diploid and spores are haploid. e. Gametes and spores are both haploid.