Genetics Quiz

Question 1

Fertilization

Answer 1

The union of sperm and egg creating an offspring

Question 2

Heredity

Answer 2

The passing of genetic information from one generation to the next via sexual reproduction

Question 3

Genetics

Answer 3

The scientific study of heredity

Question 4

Genes

Answer 4

Sections of DNA carried on a chromosome

Question 5

Allele

Answer 5

Form (version) of a gene

Question 6

Genotype

Answer 6

An organism’s genes (allele combinations)

Question 7

Phenotype

Answer 7

An organism’s outward appearance, or the physical expression of one’s genotype

Question 8

Homozygous

Answer 8

Having 2 identical alleles for a trait

Question 9

Homozygous Dominant

Answer 9

TT, or the dominant allele

Question 10

Homozygous recessive

Answer 10

tt, or the recessive allele

Question 11

Heterozygous

Answer 11

Having 2 different alleles for a trait

Question 12

EX of heterozygous

Answer 12

Tt, 1 dominant and recessive trait

Question 13

Dominant

Answer 13

An allele that is fully expressed in the phenotype even if there is only one copy present.

Question 14

Recessive

Answer 14

An allele that is only phenotypical expressed is the organism has 2 copies

Question 15

Probability

Answer 15

The Likelihood a particular event will occur

Question 16

Punnet Square

Answer 16

A chart which shows all possible genetic combinations in a cross

Question 17

STEP 1 of Making a Punnett Square

Answer 17

Designate letters which will represent the genes for the predicted trait

Question 18

STEP 2 of Making a Punnett Square

Answer 18

Write down the genotypes of each parent. They are either given to you or are possible to determine

Question 19

STEP 3 of Making a Punnett Square

Answer 19

Draw a Punnett Square. Write the alleles of the dad across the top and the alleles of the mom along the side. Separate each allele that the parents can pass

Question 20

STEP 4 of Making a Punnett Square

Answer 20

List the possible genotypes and phenotypes of offspring based on predictions in Punnett squares