Offer a verbal explanation of the figure above. Explain how the study graphed here illustrates the concept of ‘norm of reaction.'
What will be an ideal response?
ANS:
Will vary, but should include the phenotype of the plant (yarrow) depending on the effects of both genotype and environment; mention should be made of genotype 1 growing tallest at low elevation and genotype 4 growing tallest at medium elevation.
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The polymerase chain reaction was developed by:
a. Francis Crick. b. Walter Gilbert. c. E.M. Southern. d. Kary Mullis. e. Leland Hartwell
Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant bacteria has steadily increased as a direct result of
(a). biodiversity. (b). natural selection. (c). homeostasis. (d). development. (e). reproduction.
Which of the following is NOT an organic molecule?
A) Nucleic acid B) Lipid C) Protein D) Carbon monoxide E) Monosaccharide
In many species of birds, males are XX and females are XZ. In cases like this, which sex is most likely to display a sex-linked recessive trait?
A) males B) females C) Males and females are equally likely to display a sex-linked recessive trait. D) No Y chromosome is present; therefore, they are not affected by sex-linked recessive traits. E) the gender that is incubated at a higher temperature