Module 3

Question 1

affecting both sexes and appears in every generation

Answer 1

autosomal dominant

Question 2

affects both sexes and can skip generations through carriers

Answer 2

autosomal recessive

Question 3

the patterns in which single-gene traits and disorder occur in families

Answer 3

mode of inheritance

Question 4

a piece of DNA that encodes a particular trait

Answer 4

gene

Question 5

an alternative form of a gene

Answer 5

allele

Question 6

it is expressed with it is alone or in pairs

Answer 6

dominant allele

Question 7

expressed only if dominant allele is absent

Answer 7

recessive allele

Question 8

genetic composition of an individual (TT, tt, Tt)

Answer 8

genotype

Question 9

grade of similarity between alleles that determine one specif trait in an organism

Answer 9

zygosity

Question 10

contains a pair of the same allele

Answer 10

homozygous

Question 11

two the same recessive alleles (tt, yy)

Answer 11

homozygous recessive

Question 12

two of the same dominant alleles (TT, YY)

Answer 12

homozygous dominant

Question 13

contains two different alleles (Tt, Yy, Ww)

Answer 13

heterozygous

Question 14

Physical expression of a gene or allele

Answer 14

phenotypes

Question 15

most common phenotype

Answer 15

wild types

Question 16

variant of a gene’s expression that arises when the gene undergoes mutation

Answer 16

mutant phenotype

Question 17

when a plant self fertilizes and produces offsprings with the same traits

Answer 17

true-breeding

Question 18

a specific characteristic

Answer 18

trait

Question 19

units of inheritance

Answer 19

elementen

Question 20

mendels idea that elementen separates in the gemete

Answer 20

law of segregation

Question 21

who devised Punnet squares

Answer 21

Reginald Crundall Punnett

Question 22

a graph or chart that illustrates predictions of all possible gene combinations in a cross of parents

Answer 22

Punnet Squares

Question 23

• simplest
• involved one 1 characteristic

Answer 23

monohybrid cross

Question 24

study of inheritance patterns for organisms differing in two characteristics

Answer 24

dihybrid cross

Question 25

application of probability theory that can predict the chance that parents with known genotype can produce offspring of a particular genotype

Answer 25

product rule

Question 26

AKA mendelian/monofactorial disorder

Answer 26

single-gene inheritance and disorders