Incomplete and Codominance

Presentation

•

Science

•

12th Grade

•

Hard

James Gonzalez

FREE Resource

4 Slides • 10 Questions

Incomplete

and

Codominance

Incomplete Dominance

-The heterozygous phenotype is a mixture of the two homozygous phenotypes
-heterozygous becomes a 3rd distinct phenotype

-Neither allele is completely dominant nor completely recessive

Multiple Choice

Incomplete dominance means there are how many different phenotypes possible from the combination of two alleles.

One

Two

Three

Codominance

-Both alleles of the gene and traits are fully and separately expressed

-Both traits in heterozygous are expressed

-Most common example: Blood Typing

Multiple Choice

This is an example of ___________?

Incomplete dominance

Co-Dominance

Multiple Choice

This is an example of ___________.

Incomplete Dominance

Codominance

Multiple Choice

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

Incomplete Dominance

Co dominance

Multiple Choice

If you cross a black chicken with a white chicken, only checkered chickens would be produced. What kind of inheritance pattern does this follow?

incomplete Dominance

Co-Dominance

Multiple Choice

In chickens, feather color is codominant. If a black chicken BB is mated with one that is black and white (BW) what are the chances of having a chicken that is black and white?

50%

25%

100%

Multiple Choice

In some carnations, flower color exhibits codominance. Identify the correct genotypes for red, white, and speckled carnations.

Red = RR, white = rr, speckled = Rr

Red = RR, white = WW, speckled = rw

Red = RR, white = ww, Speckled = Rw

Red = RR, white = WW, speckled = RW

Multiple Choice

This type of inheritance pattern shows BOTH traits in possible offspring

complete dominance

incomplete dominance

co-dominance

dominant pattern

Multiple Choice

Snap dragon color is a incomplete dominant trait. A red flower (RR) is crossed with white flower (rr)? What color are flowers that are Rr?

Red

Red and White

White

Pink

Incomplete Dominance

Multiple Choice

Radish color is incompletely dominant, red and white are pure breeding colors. While heterozygous are purple.

Cros a red radish with a white.

4 purple

1 red, 2 purple, 1 white

2 red, 2 white

1 red, 1 purple, 2 white

Incomplete

and

Codominance

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Incomplete and Codominance

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