Genetics Unit Vocab

Question 1

Allele

Answer 1

A single letter that represents a gene. (Example: B or b)

Question 2

Complete dominance

Answer 2

one allele is dominant over another allele; Example: Yellow is dominant over green

Question 3

Heredity

Answer 3

The word we use to categorize the passing of traits from parent to offspring.

Question 4

Homozygous Recessive

Answer 4

Describes a genotype that is made up of identical lowercase alleles. (example ss or rr)

Question 5

Probability

Answer 5

The mathematical chance an event will occur

Question 6

Phenotype

Answer 6

Physical description of a trait. (blonde hair, green eyes, etc.)

Question 7

Punnett Square

Answer 7

This diagram can be used to show the potential offspring of a cross.

Question 8

Genotype

Answer 8

A two letter code which is created by information given from a father and a mother.

Question 9

Ratio

Answer 9

Examples: 4:0:0 or 1:2:1

Question 10

Dominant Trait

Answer 10

Controlled by genes that have the ability to always show up if they are present

Question 11

Codominance

Answer 11

2 dominant genes creating 3 traits with one of the traits showing both of the other 2 traits. (stripes, spots, etc.)

Question 12

Heterozygous

Answer 12

When there is one dominant and one recessive allele present in the genotype

Question 13

Homozygous Dominant

Answer 13

Describes a genotype made up of two capital letters (ex. TT or BB)

Question 14

Incomplete Dominance

Answer 14

2 dominant genes are present creating a 3rd trait that is a “blend” of the other 2 traits.

Question 15

Recessive Trait

Answer 15

Controlled by genes that will only show up if paired with an identical gene

Question 16

Monohybrid Cross

Answer 16

Complete dominance, incomplete dominance, and codominance are examples of this.

Question 17

A single letter that represents a gene. (Example: B or b)

Answer 17

Allele

Question 18

one allele is dominant over another allele; Example: Yellow is dominant over green

Answer 18

Complete dominance

Question 19

The word we use to categorize the passing of traits from parent to offspring.

Answer 19

Heredity

Question 20

Describes a genotype that is made up of identical lowercase alleles. (example ss or rr)

Answer 20

Homozygous Recessive

Question 21

The mathematical chance an event will occur

Answer 21

Probability

Question 22

Physical description of a trait. (blonde hair, green eyes, etc.)

Answer 22

Phenotype

Question 23

This diagram can be used to show the potential offspring of a cross.

Answer 23

Punnett Square

Question 24

A two letter code which is created by information given from a father and a mother.

Answer 24

Genotype

Question 25

Examples: 4:0:0 or 1:2:1

Answer 25

Ratio

Question 26

Controlled by genes that have the ability to always show up if they are present

Answer 26

Dominant Trait

Question 27

2 dominant genes creating 3 traits with one of the traits showing both of the other 2 traits. (stripes, spots, etc.)

Answer 27

Codominance

Question 28

When there is one dominant and one recessive allele present in the genotype

Answer 28

Heterozygous

Question 29

Describes a genotype made up of two capital letters (ex. TT or BB)

Answer 29

Homozygous Dominant

Question 30

2 dominant genes are present creating a 3rd trait that is a “blend” of the other 2 traits.

Answer 30

Incomplete Dominance

Question 31

Controlled by genes that will only show up if paired with an identical gene

Answer 31

Recessive Trait

Question 32

Complete dominance, incomplete dominance, and codominance are examples of this.

Answer 32

Monohybrid Cross