chap 5 test science 7A

Question 1

trait

Answer 1

characteristics passed down from parents to offspring, inherited from parents

Question 2

hereditary

Answer 2

transfer of traits from one generation to another generation

Question 3

allele

Answer 3

alternative versions of a gene

Question 4

genetics

Answer 4

study of inherited genes/characteristics

Question 5

purebread

Answer 5

homozygous, two of the same alleles

Question 6

hybrid

Answer 6

heterozygous, two different alleles

Question 7

dominant

Answer 7

traits that hide other traits when passed down to offspring

Question 8

recessive

Answer 8

traits that get hidden by dominant traits

Question 9

punett square

Answer 9

diagram used by geneticists to determine the probability of an offspring having a specific genotype

Question 10

homozygous

Answer 10

two of the same alleles

Question 11

heterozygous

Answer 11

two different alleles

Question 12

genotype

Answer 12

genetic traits

Question 13

phenotype

Answer 13

physical traits

Question 14

mutation

Answer 14

change in one of more genes

Question 15

gene

Answer 15

determine traits, come in pairs, each parent passes down one to offspring

Question 16

chromosome

Answer 16

thread like structures found in the nucleus that contain all dna

Question 17

incomplete dominance

Answer 17

one gene does not completely mask the other

Question 18

multiple alleles

Answer 18

more than two alleles exist for a trait

Question 19

human blood typing system

Answer 19

how blood type is determined (a,b,and o)

Question 20

gender linked disorders

Answer 20

the gene for the disorder is carried on the x chromosome

Question 21

hemophelia

Answer 21

gender linked disorder, persons blood cannot clot

Question 22

color blindness

Answer 22

gender linked disorder, person has difficulty distinguishing between red and green colors

Question 23

pedigree

Answer 23

a diagram/ record of descendants from someone also showing genetic disorders