BIOLOGY 171 Lecture 10: Lecture10
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1.
Selection | Term | Description |
Basal factors | a. bind to enhancers | |
Activators | b. bind to promoters | |
Coactivators | c. bind to activators | |
Locus control region | d. large enzymatic complex found in the cytoplasm of alleukaryotic cells that down-regulates gene expression | |
RISC | e. influences transcription from multiple genes linked over alarge region of DNA |
2.
Selection | Term | Description |
Gene pool | a. The process in which rare alleles increase in frequency in anew population | |
Genetic drift | b. The sum total of all alleles carried in all members of apopulation | |
Founder effect | c. The proportion of all copies of a gene in a population of aspecific type | |
Evolutionary equilibrium | d. Unpredictable, chance fluctuation in allele frequency thathave a neutral effect on fitness | |
Allele frequency | e. a balance between a new allele and selection against thatallele |
Need help with evolution questions:
1.) A haplotype is best defined as the ________________.
haploid genotypes of all the gametes produced by a diploid individual | |
ABO blood type conferred by an individual gamete |
genotype of either the paternal or maternal chromosomal complement |
multilocus genotype of a chromosome or gamete |
2.) Which of the following statements regarding linkage disequilibrium is true?
Exists when D is less than zero, but not when it is greater than zero. |
Is reduced by sexual reproduction. |
Is increased by crossing-over during meiosis. |
Is increased by any random sampling error that happens to create or destroy certain chromosome genotypes but not others. |
Is reduced by selection that favors certain combinations of genotypes. 3.) Selection on multilocus genotypes in random-mating populations leads to linkage disequilibrium when _______________.
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