Introduction to Dominant and Recessive Genes

Select dominant phenotypes. (More then 1 answer)

• HH

• Hh

• hh

• None

Tags

NGSS.HS-LS3-1

Select Recessive traits:

• TT

• Tt

• tt

• None

Dd is

• Dominant

• Recessive

• Both

• None

dd is

• Dominant

• Recessive

• Both

• None

Tags

NGSS.HS-LS3-1

DD is

• Dominant

• Recessive

• Both

• None

Tags

NGSS.HS-LS3-1

TT and Tt are is

• Dominant

• Recessive

• Both

• None

Being able to roll the tongue is a dominant trait (T). Not being able to roll the tongue is a recessive trait (t). A persons genes are tt. Which trait would they have?

• Able to roll the tongue

• Not able to roll the tongue

• Can't tell

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If Black phenotype is recessive then its genotype will be

• BB

• Bb

• bb

• None

Tags

NGSS.HS-LS3-1

Dominant alleles are written with:

• Upper case always

• Lower case always

Recessive alleles are written with:

• Upper case always

• Lower case always