Exam 2 Vocabulary

Question 1

penetrance

Answer 1

percentage of individuals with a particular genotype that express the phenotype expected of that genotype

Question 2

a posteriori

Answer 2

translated as “from the later”

Question 3

epistatic gene

Answer 3

gene that masks or suppresses the effect of a gene at a different locus

Question 4

turner syndrome

Answer 4

human condition in which cells contain a single X chromosome and no Y chromosome

Question 5

klienfelter syndrome

Answer 5

human condition in which cells contain one or more Y chromosomes along with multiple X chromosomes

Question 6

a priori

Answer 6

translated as “from the earlier”

Question 7

hypostatic gene

Answer 7

gene that is masked or suppressed by the action of a gene at a different locus

Question 8

expressivity

Answer 8

degree to which a trait is expressed

Question 9

sex-limited

Answer 9

characteristic encoded by autosomal genes and expressed in only one sex

Question 10

sex-influenced

Answer 10

characteristic encoded by autosomal genes that are more readily expressed in one sex