Question 1

Dominant Trait

Accepted Answer

If this trait is passed down, it always appear in the offspring (Capital Letters)

Question 2

Recessive Trait

Accepted Answer

These traits only appear if both alleles are for the recessive trait (Lowercase Letters)

Question 3

Homozygous

Accepted Answer

Homozygous means that both alleles are the same.(GG, bb, RR, rr, IAIA)

Question 4

Heterozygous

Accepted Answer

Heterozygoys means that the alleles are different.(Gg, Bb, Rr, IAIB)

Question 5

What percentage is each box worth in a Punnett square?

Accepted Answer

Each box is 25%

Question 6

How do you calculate the total percentages or combinations in a dihybrid cross?

Accepted Answer

You multiply the number from each small Punnett Square

Question 7

Allele

Accepted Answer

They are the different versions of a gene. (Example: White fur and gray fur are different alleles for fur color.)

Question 8

Gene

Accepted Answer

They are sections of DNA used to make proteins.

Question 9

Genotype

Accepted Answer

The combination of genes in an organism

Question 10

Phenotype

Accepted Answer

The physical appearance of the organism

Question 11

Simple Dominance

Accepted Answer

one allele is completely dominant and the other is recessive. (This is what you learn first.)

Question 12

Incomplete Dominance

Accepted Answer

A heterozygous organism has an intermediate phenotype (Example:red x white→pink)

Question 13

Codominance

Accepted Answer

A heterozygous organism has a phenotype that is a combination of both traits (Example: white x black → spotted)

Question 14

Sex-Linked Recessive

Accepted Answer

Sex linked traits appear on the X chromosome. Males are more likely to receive a sex-linked recessive trait

Question 15

What does it mean for a gene to be expressed?

Accepted Answer

Genes are expressed when they are activated and used to make a protein

Question 16

What does each box in a Punnett Square represent?

Accepted Answer

Each box represents the possible fusion of two gamete cells (Sperm and egg are gamete cells)

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