Chapter 11-2 Probability and Punnett Squares

Emily has brown hair. Which is most likely a true statement about Emily?

• Emily’s favorite color is brown.
• Emily has a parent with brown hair.
• Emily’s older brother has brown hair. 

Which statement best supports why many offspring look similar to their parents?

• Offspring inherit characteristics from one parent.
• Offspring inherit characteristics from both parents.
• Parents choose which characteristics to pass on to their offspring.
• Parents choose to change their appearance to match that of their offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

Tags

NGSS.HS-LS3-1

Dominant or recessive?
tt

• Dominant 
• Recessive

Tags

NGSS.HS-LS3-1

Homozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

Tags

NGSS.HS-LS3-1

Homozygous or heterozygous?
BB

• Homozygous
• Heterozygous

Tags

NGSS.HS-LS3-1

What is a phenotype?

• The expression of a trait; physical appearance.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

This means Different Gene

• Dominant
• Recessive
• Homozygous
• Heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Dominant or recessive?
Dd

• Dominant
• recessive
• neither
• homozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2