Genetics: Codominance, polygenic inheritance, & epistasis

Condition in which both alleles for a gene are expressed when present - both traits are visible

• Codominance

• Dominance

• Complete dominance

• Incomplete dominance

the characteristics of a trait that you can see

• genotype
• phenotype

Tags

NGSS.HS-LS3-2

the genetic code (make up) of a trait

• genotype
• phenotype

Tags

NGSS.HS-LS3-1

This type of inheritance pattern shows BOTH traits in possible offspring

• complete dominance
• incomplete dominance
• co-dominance
• dominant pattern

Tags

NGSS.HS-LS3-1

In some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between A speckled flower and a red flower. Find the phenotype ratio.

• 2 red: 2 speckled: 0 white
• 4 red: 0 speckled: 0 white
• 0 red: 4 speckled: 0 white
• 0 red: 2 speckled: 2 white

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

An example of polygenic inheritance is...

• Skin Color
• hitch hikers thumb
• blood types

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

The different forms of a gene are called

• traits
• pollinators
• alleles
• hybrids

Tags

NGSS.HS-LS3-1

Type of Trait that is controlled by MANY genes at once. Many Genes will 'contribute' to one phenotype.

• Multiple Allele Trait
• Polygenic Trait
• Monogenic Trait
• Co-Dominant Trait

Tags

NGSS.HS-LS3-3

B = Black, b = Chocolate. Some labs inherit black or brown fur alleles but have light fur. This graphic shows an example of...

• Codominance

• Epistasis

• Mendelian Dominance

• Polygenic inheritance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

B = Black, b = Chocolate. ee = no pigment

What is the phenotype of a dog that is bbEe?

• Black

• Chocolate

• Yellow Lab (brown skin)

• White lab (black skin)

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2