ch.6 vocab

Question 1

heredity

Answer 1

passing of traits from parent to offspring

Question 2

alleles

Answer 2

different forms a gene might have for a trait

Question 3

genetics

Answer 3

study of how traits are inherited through the actions of the alleles

Question 4

dominant

Answer 4

describes a trait that covers up, or dominates, another form of the trait

Question 5

recessive

Answer 5

describes a trait that is covered up, or dominated, by another form of the trait

Question 6

Punnett square

Answer 6

tool used to predict results in mendelian genetics; shows all the ways in which alleles combine

Question 7

genotype

Answer 7

genetic makeup of an organism

Question 8

homozygous

Answer 8

organism that has two identical alleles for a single trait

Question 9

heterozygous

Answer 9

organism that has two different alleles for a single trait

Question 10

phenotype

Answer 10

physical expression of a particular genotype

Question 11

multiple alleles

Answer 11

term used when a trait is controlled by more than two alleles

Question 12

polygenic inheritence

Answer 12

occurs when a group of gene pairs act together to produce a single trait

Question 13

sex-linked gene

Answer 13

allele inherited on a sex chromosome

Question 14

pedigree

Answer 14

tool that shows the occurrence of a trait in a family

Question 15

genetic engineering

Answer 15

changing of a genes DNA sequence by biological and chemical methods