Punnett Squares

What are genes?

• Something you wear.
• Segments of DNA that carry traits for offspring.
• The powerhouse of cells.
• None of the above.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Which of the following is an example of phenotype?

• bb
• blue eyes

Which of these is homozygous recessive?

• Rr
• rR
• RR
• rr

The different forms of a gene

• alleles

• atoms

• proteins

• wheels

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This trait always shows up in an organism when the allele is present

• dominant allele

• codominance

• probability

• recessive allele

This trait is hidden whenever the dominant allele is present

• dominant allele

• codominance

• recessive allele

• Punnett Square

B = brown fur b = white fur

In the Punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Which of the following represent and organism’s genotype?

• Gg

• G

• Red Hair

• Eye Color

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A heterozygous organism has

• three different alleles for a trait.

• two identical alleles for a trait.

• only one allele for a trait.

• two different alleles for a trait.

A homozygous organism has

• three different alleles for a trait.

• two identical alleles for a trait.

• only one allele for a trait.

• two different alleles for a trait.