Non-Mendelian Genetics CFU Prep

​In heterozygous genotype the dominant allele completely masks the effect of the recessive allele on the organism's phenotype

Complete Dominance

​A type of inheritance in which two contrasting alleles contribute to the individual a trait not exactly like either parent; blending inheritance.

Incomplete Domance

three or more forms of a gene that code for a single trait

​​Multiple Allele

​

A condition in which both alleles for a gene are fully expressed

Codominance

​

Multiple Choice

Which type of allele inhertitance is the blending of traits?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

Multiple Choice

Which type of allele inhertitance is when both allele traits show up?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

Multiple Choice

Which type of allele inhertitance is when one allele covers or hides a weaker allele?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

Multiple Choice

Which type of allele inhertitance has MORE than two alleles?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

Multiple Choice

What type of inheritance pattern is shown here?

• Codominance

• Incomplete dominance

Multiple Choice

What does this Punnett square and the probabilities of the ofspring represent?

• incomplete dominance

• codominance

Multiple Choice

A woman with curly hair and a man with straight hair produced a child with wavy hair:

• Incomplete dominance

• Codominance

• Complete dominance

Multiple Choice

this image is an example of

• codominance

• dominance

• incomplete dominance

Multiple Choice

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

• Incomplete dominance

• Codominance

Match

Match the following examples to their inheritance type.

• Complete dominance

• Incomplete Dominance

• Multiple Alleles

• Codominance

The allele for brown hair is dominant to the allele for blonde hair.

When a blue and yellow fish are bred, their offspring is green.

There are 3 alleles for blood type. A, B, and O.

When a blue and yellow fish are bred, the offspring have blue and yellow scales

• The allele for brown hair is dominant to the allele for blonde hair.

• When a blue and yellow fish are bred, their offspring is green.

• There are 3 alleles for blood type. A, B, and O.

• When a blue and yellow fish are bred, the offspring have blue and yellow scales

More than one gene contribute to a trait.

Example: 16 different genes contribute to eye color.

Polygenic Traits

Sex-Linked

Epistasis

A gene is carried on the X chromosome, so females have 2 copies and males have 1.

Example: color-blindness is a recessive gene on the X chromosome.

A gene can be controlled by another gene.

Example: in the picture above, it doesn't matter what your genes say for hair color if you are bald.

Multiple Choice

What is the inheritance pattern where more than one gene contributes to a trait?

• Multiple Alleles

• Polygenic Traits

• Epistasis

• Sex-Linked

Multiple Choice

What is the inheritance pattern where one gene controls another?

• Multiple Alleles

• Polygenic Traits

• Epistasis

• Sex-Linked

Multiple Choice

What is the inheritance pattern where a gene is carried on the X chromosome?

• Multiple Alleles

• Polygenic Traits

• Epistasis

• Sex-Linked

Multiple Choice

A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have red (RR) flowers?

• 0%

• 25%

• 50%

• 100%

Multiple Choice

Some flowers are controlled by codominance. Red flowers (F^RF^R), blue flowers (F^BF^B) and Speckled flowers (F^RF^B).

Cross a red flower with a speckled flower. What is the phenotypic ratio?

• 50% red, 50% speckled

• 25% red, 25% blue

• 100% blue

Multiple Choice

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

• Red and white spotted

• Red

• Pink

• White

Multiple Choice

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be gray?

• 25

• 50

• 75

• 100

Multiple Choice

A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have red (RR) flowers?

• 0%

• 25%

• 50%

• 100%

Multiple Choice

The hair form gene shows incomplete dominance. If your genotype is SS, you will have straight hair. If your genotype is CC, you will have curly hair. If your genotype is SC, you will have wavy hair. Mr. and Mrs. Anderson both have wavy hair (SC). What percentage of their children will also have wavy hair (SC)?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

What is the Genotype for Homozygous "B" allele

• IᴬIᴮ

• Iᴮi

• IᴬIᴬ

• IᴮIᴮ

Multiple Choice

What is the Genotype for Heterozygous Type A Blood

• IᴬIᴮ

• Iᴬi

• IᴬIᴬ

• IᴮIᴮ

Multiple Choice

What is the Genotype for Type 0

• IᴬIᴮ

• Iᴬi

• IᴬIᴬ

• ii

Multiple Choice

Punnett Square: A man is homozygous for the B allele, and a woman is type O. What are ALL the possible blood types of their baby?

• IᴮIᴮ

• ii

• IᴬIᴬ

• Iᴮi

Multiple Choice

Punnett Square: Type AB father and type O mother. What are the percentages of each offspring?

• Type A: 50%, Type B 0%, Type AB 50%, Type 0 0%

• Type A: 50%, Type B 50%, Type AB 0%, Type 0 0%

• Type A: 25%, Type B 25%, Type AB 25%, Type 0 25%

• Type A: 0%, Type B 0%, Type AB 50%, Type 0 50%

Multiple Choice

Codominance occurs in calico cats, which allows for the Black and Tan colors to show. What percentage of the offspring represented in this P square will be calico (black and tan spotted)?

• 25%

• 50%

• 75%

• 100%

• one parent will be XX (female)

• one parent will be XY (male)

• In this example, normal vision C is dominant to color-blindness.

• A homozygous normal vision mother is being crossed with a color-blind male.

​

Sex-Linked Punnett Square

​The daughters will be heterozygous for this trait. The sons will get the Y from their father, and a normal vision gene from their mother.

Multiple Choice

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X ^R X ^r ?

• male with white eyes

• female with red eyes

• male with red eyes

• female with white eyes

Multiple Choice

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X ^R Y ?

• male with white eyes

• female with white eyes

• male with red eyes

• female with red eyes

Multiple Choice

The woman who is colorblind marries a man with normal vision. What is the probability that their sons will be colorblind?

• 0%

• 25%

• 50%

• 100%