Which of the following terms refers to a situation where a single phenotypic character is determined by the additive effects of two or more genes?
A) incomplete dominance
B) codominance
C) pleiotropy
D) polygenic inheritance
Answer: D
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The electron transport system:
A. both a and d are correct B. utilizes the nuclear membrane of eukaryotes C. utilizes the mitochondrial membrane of prokaryotes D. generates a concentration gradient of protons E. requires a membrane
What happens to glutamic acid 35 and aspartic acid 52 at the end of the reaction?
A.) both amino acids are restored to their original forms B.) glutamic acid is deprotonated and negatively charged C.) lysozyme is destroyed and recycled as the product is released D.) aspartic acid has formed a covalent bond with the first sugar
Which of the following statements is true?
A) The linkage ratio is best seen in genes on nonhomologous chromosomes. B) Linkage without crossing over leads to all recombinant chromosomes. C) A centromere and its surrounding genes constitute a linkage group. D) The chromosomal theory of inheritance denotes that linked alleles will never be separated. E) If two gene loci are on nonhomologous chromosomes, genes at these loci are expected to assort independently.
A shortcoming of potentially using the probit/logit model when attempting to identify causal effects can include:
A. the use of instrumental variables with probit/logit is difficult. B. software to estimate the probit/logit model is not widely available. C. probit/logit models have a difficult time incorporating binary control variables. D. hypothesis testing is all but impossible in probit/logit models.