GEN hw 20

eye color in humans is a polygenic trait influenced by 16 genes. how many phenotypic classes of eye color would you expect

33

how many gametes are involved in the formation of dizygotic twins

4

height in a species of plant is controlled by 4 genes with additive alleles. which of the following is a genotype you would expect for a plant of average height

aaBBCcDd

which of the following is used to calculate narrow-sense heritability?

additive variance

which of the following describes an expression quantitative trait loci (eQTL)?

lactose tolerance level is determined by lactase enzyme alleles with different mutations in the promotor that influence the gene's mRNA levels

which of the following is an example of G x E interaction

lobsters with allele A grow larger than lobsters with allele a in cold water environments. in warm tropical waters lobsters with allele a grow larger

you find the heritability of heigh in a population of oak trees in up state SC to be 0.67. your colleague finds the heritability of height in a population of oak trees in south AL to be 0.44. how is this possible

measured heritability depends on environmental variation present in population being studied

which of the following is not a major point of the multiple-gene hypothesis

phenotypic traits show discontinuous variation and cannot be quantified, only qualified

why is the heritability of having two eyes very low

most of the variation in eye number is due to accidents and injuries

you are studying the opossum. you find 11 genes that influence the weight of newborn joeys, and that the mother's diet also influences birth weight. what term best describes this trait

multifactorial

you are studying corn and find that higher stalk height is correlated with larger cob size. which of the following r values would be expected for this relationship?

r = + 0.78

what is the difference between standard deviation and standard error

standard error takes sample size into account