Genetics Vocab Part 2

Question 1

law of heredity stating that pairs of alleles for a trait separate when gametes are formed

Answer 1

law of segregation

Question 2

having two identical alleles for a trait

Answer 2

homozygous

Question 3

having two different alleles for a trait

Answer 3

heterozygous

Question 4

physical appearance

Answer 4

phenotype

Question 5

an organism’s genetic makeup, or allele combinations

Answer 5

genotype

Question 6

a chart that uses probability to predict the genotype and phenotype combinations in offspring

Answer 6

punnett square

Question 7

genes for different traits can segregate independently during the formation of gametes

Answer 7

independent assortment

Question 8

a cross between two individuals, concentrating on two traits

Answer 8

dihybrid cross

Question 9

a cross between two individuals, concentrating on one trait

Answer 9

monohybrid cross

Question 10

situation in which one allele is not completely dominant over another allele; heterozygous phenotype is a blend of the two alleles

Answer 10

incomplete dominance

Question 11

a condition in which both alleles for a gene are fully expressed

Answer 11

codominance

Question 12

three or more forms of a gene that code for a single trait

Answer 12

multiple alleles

Question 13

trait that is produced by two or more genes

Answer 13

polygenic trait