Unit 2 Lesson 4

Question 1

Heredity

Answer 1

The passing of genetic material from parents to their offspring

Question 2

Characteristic

Trait

Answer 2

A feature that has different forms in a population - (general )( example: color, shape, position)

The different forms of each characteristic - (specific)

Question 3

Genes

Answer 3

Segments of DNA found on chromosomes that give instructions for producing a certain characteristic

Question 4

Alleles

Answer 4

The different versions of a gene

Dominant alleles have a capital letter. Recessive alleles use lowercase letters

Question 5

Homozygous

Heterozygous

Answer 5

When an organism has either 2 dominant or 2 recessive alleles

When an organism has 1 dominant allele and 1 recessive allele

Question 6

Genotype

Phenotype

Answer 6

The combination of alleles you get from your parents

The traits we can observe in an organism

Question 7

Dominant allele

Recessive allele

Answer 7

A trait is seen in the organism if 1 or 2 copies are present

A trait is seen only when 2 copies are present

Question 8

Complete dominance

Answer 8

Individuals will show the trait even if they are heterozygous (1 copy)

Question 9

Incomplete Dominance

Answer 9

Each allele in a heterozygous individual influences the phenotype. (A blend of the phenotypes of the parents).
Example: Red X White = Pink

Question 10

Codominance

Answer 10

Both of the alleles in a heterozygous individual contribute to the phenotype. ( heterozygous individuals have both of the traits