8.3

Question 1

genetics

Answer 1

science of inherited traits

Question 2

DNA (deoxyribonucleic acid)

Answer 2

special molecule that contains the genetic material of the organism

Question 3

gene

Answer 3

section of DNA having a certain pattern of chemical elements

Question 4

chromosome

Answer 4

tightly wound strand of genetic material or DNA

Question 5

XX (makes up the 23rd pair of chromosomes)

Answer 5

female

Question 6

XY (makes up the 23rd pair of chromosomes)

Answer 6

male

Question 7

of the 23 pairs, 23 determine the human characteristics OR

Answer 7

autosomes

Question 8

dominant

Answer 8

referring to a gene that actively controls the expression of a trait

Question 9

recessive

Answer 9

referring to a gene that only influences the expression of a trait when paired w/ an identical gene

Question 10

polygenetic inheritance

Answer 10

process that influence of more than one pair of genes on any one trait

Question 11

genetic disorders

Answer 11

• Dominant gene disorders w/ a one parent carrier
• Recessive gene disorders need both parents as carriers

Question 12

chromosome disorder

Answer 12

having more or less than 23 pairs of chromosomes
- down syndrome
- klinefelter
- turner