Genetics

What is heredity?

• A kind of genetic disorder
• The way DNA divides
• A trait you inherit from your parents
• The passing down of traits from parents to children

Tags

NGSS.HS-LS3-1

How many pairs of chromosomes exist in each of your cells?

• 10
• 12
• 23
• 46

Tags

NGSS.HS-LS3-2

Why are your chromosomes arranged in pairs?

• Scientists have no idea

• Because you get one from your mom and one from your dad

• Because pairs can divide easier

• Because nuclei are in pairs in the cell

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Tags

NGSS.HS-LS3-1

Traits are passed from parents to offspring. For any 1 specific trait, how many alleles will a child get from each parent?

• one

• two

• three

• five

Which of the following is a phenotype?

• BB

• recessive

• Bb

• Blue eyes

having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

Tags

NGSS.HS-LS3-1

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

One form of a gene is called_______________

• a DNA
• a Phenotype
• a trait
• an allele