An X-linked homozygous color-blind woman gives birth to a son who is not color blind. He could have normal vision because he
A) has Down syndrome.
B) has Klinefelter syndrome.
C) has Turner syndrome.
D) is XYY.
E) has triploidy.
B
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Mold-lactic fermentation results in a unique fermented milk consumed in Finland and called ________.
Fill in the blank(s) with the appropriate word(s).
Unlike in animal meiosis, meiosis in plants gives rise to
a. diploid spores. b. haploid spores. c. diploid gametes. d. haploid gametes. e. cells without walls.
What process does wine go through in order to prevent it from turning to vinegar?
A. Filtration B. Pasteurization C. Irradiation D. Distillation E. Autoclaving
An initial, but extensive, study of a breeding population of gerbils shows that the allele for fluffy fur (F) is dominant and occurs with a frequency of 0.8, whereas the smooth fur allele (f) occurs with a frequency of 0.2. Several years later, another study is conducted which shows that the frequency of gerbils displaying the smooth fur phenotype is 0.4. Which statement is true?
a. The population exhibits Hardy-Weinberg equilibrium. b. The proportion of smooth-furred gerbils has doubled. c. Some kind of evolutionary force acted on the population. d. The allele for smooth fur has become dominant.