Inheritance

Question 1

Recessive

Answer 1

Term used to describe an allele that requires two copies to be expressed

Question 2

Dominant

Answer 2

Term used to describe an allele that requires one copy to be expressed

Question 3

Heterozygous

Answer 3

having two different alleles for a trait in a genotype

Question 4

Homozygous

Answer 4

Having two identical alleles in a genotype

Question 5

Genotype

Answer 5

The combination of alleles an individual has

Question 6

Phenotype

Answer 6

The trait expressed by an individual’s alleles

Question 7

Agglutination

Answer 7

clumping of red blood cells

Question 8

Sex linked

Answer 8

Refers to traits that are found on the sex chromosomes only

Question 9

X-linked

Answer 9

Trait that is found on the X chromosome only

Question 10

Continuous

Answer 10

Describes traits that can exist in a range (height, weight, skin colour, etc.);

produces a normal curve distribution

Question 11

Discontinuous

Answer 11

Describes traits that exist in categories (blood type, sex, etc); usually determined by a single gene

Question 12

State that genetics affect an organism’s characteristics

Answer 12

The genes the organism gets from it’s parent or parents

Question 13

State that environment affects an organism’s characteristics

Answer 13

The conditions an organism is exposed to as it grows

Question 14

What are monozygotic twins?

Answer 14

Identical twins.

One fertilised egg (ovum) splits and develops into two babies that have exactly the same genetic information

Question 15

What are dizygotic twins?

Answer 15

Fraternal twins.

Two separate eggs (ova) are fertilised by two sperm and produce two genetically unique children.

Question 16

How can blood type A be determined with agglutination?

Answer 16

If agglutination occurs with anti-A antibodies, the blood type is A.

Question 17

How can blood type B be determined with agglutination?

Answer 17

If agglutination occurs with anti-B antibodies, the blood type is B.

Question 18

How can blood type AB be determined with agglutination?

Answer 18

If agglutination occurs with both anti-A and anti-B antibodies, the blood type is AB.

Question 19

How can blood type O be determined with agglutination?

Answer 19

If no agglutination occurs with either antibody, the blood type is O.

Question 20

Allele

Answer 20

Different forms of a gene