genetics

Question 1

define heredity

Answer 1

the passing of traits from parent to offspring

Question 2

define traits

Answer 2

characteristics of an organism

Question 3

how are traits in living things passed along from one generation to the next

Answer 3

when dna is passed down

Question 4

what is fertilization

Answer 4

sperm+egg

Question 5

what is dna

Answer 5

genetic code

Question 6

what is the shape of dna

Answer 6

double helix

Question 7

what is a gene

Answer 7

dna unit of heredity

Question 8

what is an allele

Answer 8

one of two or more versions of a genetic sequence

Question 9

what is mutation

Answer 9

change in dna sequence

Question 10

what is a chromosome

Answer 10

contain dna in nucleus

Question 11

how many chromosomes in human body cell

Answer 11

46

Question 12

how many chromosomes are in a human egg or sperm cell

Answer 12

23

Question 13

what is variation

Answer 13

difference

Question 14

what are two causes of variation within a species

Answer 14

genetic mutation and environmental factors

Question 15

what is genetic engineering

Answer 15

the process of manipulating the dna of an organism in order to change its traits

Question 16

what is selective breeding

Answer 16

breading a special animal for a specific trait ex. dog