Biology Chapter 25 Basic Genetics

Question 1

Mendel’s First Law

Answer 1

law of segregation

Question 2

Mendel’s Second Law

Answer 2

Law of Independent Assortment

Question 3

Blood group A

Answer 3

antigen A
anti-B
can receive blood from A, O
can give blood to A, AB

Question 4

Blood group B

Answer 4

antien B
anti-B
can receive blood from B, O
can give blood to B, AB

Question 5

Blood group AB

Answer 5

antigen A, B
no antibody
can receive blood from A, B, AB, O
can give blood to AB

Question 6

Blood group O

Answer 6

no antigen
anti-A, anti-B
can receive blood from O
can give blood to A, B, AB, O

Question 7

Continuous variation

Answer 7

continuous range of intermediate phenotypes
controlled by many genes -> environmental effect relatively large
histogram -> normal distribution curve

Question 8

Genetic factors

Answer 8

independent assortment of chromosomes at meiosis
crossing over at meiosis
random combination of gametes during fertilization

Question 9

Mutation

Answer 9

suden and permanent change in DNA
only mutations occur in gametes or gamete-producing cells can be passed on to next generation

Question 10

A

Answer 10

adenine

Question 11

T

Answer 11

thymine

Question 12

C

Answer 12

cytosine

Question 13

G

Answer 13

guanine

Question 14

U

Answer 14

uracil