GENE 312 CHAPTER 2 EXAM WITH
VERIFIED ANSWERS { GRADED A+}
What is population genetics? - ✔✔the study of the distribution of
alleles in an entire population of individuals over time
The study of quantitative, or ____________ inheritance, involves the
study of: - ✔✔polygenic; alleles that contribute to the overall
phenotype
When looking at quantitative inheritance, some important assumptions
must be made. What are they? (3) - ✔✔1. Contributing alleles must be
equal and additive
2. Alleles are considered incompletely dominant
3. No linkage or epistasis is involved
, There are ________ genes involved in the determination of plant height
in ___________. - ✔✔3; tobacco
What is a contributing allele? - ✔✔The dominant allele added to the
phenotype (A, B, C, etc.)
Intermediate phenotype definition: - ✔✔Phenotype that combines the
phenotypes of a dominant and a recessive allele; product of incomplete
dominance (AaBbCc, etc.)
Binomial distribution formula: - ✔✔(p+q)^N = 1 where
- p is the prob. of inheriting a contributing allele (1/2)
- q is the prob. of inheriting a recessive allele (1/2)
2n is the total # of contributing alleles
To solve for the number of alleles: - ✔✔2n
To solve for the proportion of the rarest phenotype: - ✔✔(1/2)^2n
# of phenotypes -1 = - ✔✔2n
VERIFIED ANSWERS { GRADED A+}
What is population genetics? - ✔✔the study of the distribution of
alleles in an entire population of individuals over time
The study of quantitative, or ____________ inheritance, involves the
study of: - ✔✔polygenic; alleles that contribute to the overall
phenotype
When looking at quantitative inheritance, some important assumptions
must be made. What are they? (3) - ✔✔1. Contributing alleles must be
equal and additive
2. Alleles are considered incompletely dominant
3. No linkage or epistasis is involved
, There are ________ genes involved in the determination of plant height
in ___________. - ✔✔3; tobacco
What is a contributing allele? - ✔✔The dominant allele added to the
phenotype (A, B, C, etc.)
Intermediate phenotype definition: - ✔✔Phenotype that combines the
phenotypes of a dominant and a recessive allele; product of incomplete
dominance (AaBbCc, etc.)
Binomial distribution formula: - ✔✔(p+q)^N = 1 where
- p is the prob. of inheriting a contributing allele (1/2)
- q is the prob. of inheriting a recessive allele (1/2)
2n is the total # of contributing alleles
To solve for the number of alleles: - ✔✔2n
To solve for the proportion of the rarest phenotype: - ✔✔(1/2)^2n
# of phenotypes -1 = - ✔✔2n
