Free Printable Non-Mendelian Genetics

Worksheets

Non-Mendelian Genetics

Total questions: 49

Worksheet time: 1hrs 14mins

Name

Class

Date

What type of genetics will take 2 alleles and blend the phenotypes of these two traits together?

Incomplete Dominance

Co-Dominance

Complete Dominance

Homozygous Inheritance

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

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

Incomplete Dominance

Codominance

Complete Dominance

Pedigree

Multiple Alleles

A red flowered plant (RR) is crossed with a red flowered plant (WW) and a red and white plant (RW) results. What type of inheritance pattern is this?

Incomplete Dominance

Codominance

Complete dominance

Sex-Linked

Multiple Alleles

Which of the following is a correct statement for Codominance?

Both alleles are expressed equally

Neither allele is expressed

Expression of a trait depends upon the environment

Alleles will go dormant when not expressed

In a pedigree, what shape represents a male?

Circle

Square

Triangle

Diamond

Give the genotype for person III-3

Give the genotype for person II-1

How many kids did the mother and father from the first generation have?

10.

What percentage of the female offspring will be a carrier for this recessive disease?

50%

100%

25%

11.

If both parents have type AB blood, what is the probability that their child will have type O blood?

25%

50%

100%

12.

This image is an example of what type of dominance?

Codominance

Dominance

Incomplete dominance

Sex-linked

Pedigree

13.

A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:

All black

All white

All gray

Speckled black and white

14.

A red flowered plant (RR) bred with a white flowered plant (rr) produces all pink flowers. These flowers express incomplete dominance. What percentage of the offspring will have pink (Rr) flowers if you cross 2 pink flowers?

25%

50%

100%

15.

A roan cow shows codominance in fur color (brown and white). What are the phenotypes expected for the offspring if a female roan and a male roan mate together?

All four would be brown and White

Half would be orange, half would be white

2 Brown: 2 Brown and White: 0 White

1 Brown: 2 Brown and White: 1 White

16.

Red hair (R) and white hair (W) are codominant in cows. They produce a cow with both red and white spots, called "roan", when mixed.

Cross a white cow (WW) with a roan cow (RW).

What percentage will be roan?

25%

50%

75%

100%

17.

Red flowers (R) show incomplete dominance over white flowers (r). Cross two pink flowers (Rr).

What percentage of the offspring will have red flowers?

25%

50%

75%

100%

18.

Red flowers (R) show incomplete dominance over white flowers (r). Cross one white and one pink flower (Rr).

What percentage of the offspring will have pink flowers?

25%

50%

75%

100%

19.

Red hair (R) and white hair (W) are codominant in cows. They produce a cow with both red and white spots, called "roan", when mixed.

Cross a white cow (WW) with a roan cow (RW).

What percentage will be red?

25%

50%

75%

100%

20.

An example of codominance is ...

Heterozygote snapdragons are pink, not red or white

Heterozygote chickens are black AND white, not just one or the other

The three alleles that affect height

The gene that controls whether llama wool color will be expressed

21.

What type of inheritance controls blood types in humans?

Incomplete dominance

Polygenic inheritance

Multiple alleles

Recessive genes

22.

A man with type O blood has children with a woman who is heterozygous for type A blood. What is the probability that their children will have type A blood?

25%

50%

75%

23.

Suppose that a mother has blood Type A and genotype I^Ai and the father has blood Type B and genotype I^Bi. Draw a Punnett square to find the possible genotypes of their children.

What are the possible phenotypes of the kids? (select all that apply)

Type A

Type B

Type AB

Type O

24.

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

25.

Look at this cross: X^BX^B (x) X^bY

What proportion/percent of the male children are colorblind (b)?

100%

75%

25%

26.

H = Normal blood clotting

h = Hemophilia

X^HX^h (x) X^HY

What is the probability that any of their offspring will have hemophilia?

100 %

75 %

50 %

25 %

27.

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

X^NY^N

XⁿYⁿ

X^NY

XⁿY

28.

What are the blood types of the possible children that a woman (type O) and man (type AB) can have?

O and AB

O and A

O and B

A and B

29.

X and Y are (a) chromosomes. Females are (b) and males are (c) .

Choose from the below words

SEX

Autosomes

30.

In fruit flies, eye color is a sex-linked trait. Red (R) is dominant to white (r).

Which genotype shows a female fly with white eyes?

$X^{R^{ }}X^r$

$X^RX^R$

$X^rX^r$

31.

Match the following. H= no hemophilia, h = hemophilia

Male without hemophilia

X^HY

Female with hemophilia

X^hX^h

Female Carrier

X^H X^h

Male with hemophilia

X^hY

Female who is NOT a carrier

X^HX^H

32.

Which of the following genotypes belongs in the red box in the Punnett square?

X^BX^b

X^bX^b

X^bY

X^BY

33.

The following Punnett square depicts the x-linked cross of a female who carries hemophilia with a man showing no symptoms. Fill in the genotype represented by the blank box in the punnett square.

X^H X^H

X^hX^H

X^H Y

X^h Y

34.

Hemophilia is a recessive x-linked disorder. Cross a female carrier with a recessive male.
What percentage of the children will have hemophilia?

50 %

25 %

100 %

75 %

35.

What is the likelihood of this cross having a child that is colorblind?

100 %

75 %

50 %

25 %

36.

What is the probability that this cross will have a boy that is colorblind?

100%

50%

25%

37.

Which gender has an X and a Y chromosome?

Male

Female

38.

How are individuals III-2 and II-4 related?

Brother and sister

Dad and daughter

Uncle and niece

Grandfather and granddaughter

39.

On this pedigree, the allele for curly hair is dominant. The couple labeled 2 both have curly hair, but have a daughter who does not have curly hair. Therefore, we can tell from the chart that for the couple labeled 2 -

The male is heterozygous and the female is heterozygous.

The male is heterozygous and the female is homozygous dominant.

40.

How many generations are shown in this pedigree?

41.

Is this trait (the shaded individuals) dominant or recessive?

Dominant

Recessive

42.

If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?

43.

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). Which of the following options would be considered a "carrier"?

X ^R X ^R

X ^R X ^r

X ^R Y

X ^r X ^r

X ^r Y

44.

What is the genotype of the mother?

BB or Bb

45.

Cystic fibrosis is an autosomal recessive disease .

Study the pedigree what are the possible genotypes of #10? (more than one answer)

X^AX^a

46.

If hemophilia is a sex-linked recessive trait, what genotype would individual III-3 have?

X^bX

X^bX^b

X^bY^b

X^bY

47.

Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:

The male is heterozygous and the female is homozygous.

The male is homozygous and the female is heterozygous.

The male is homozygous and the female is homozygous.

The male is heterozygous and the female is heterozygous.

48.

Individuals II 1 and II 2 have some children with dominant phenotypes and some with recessive phenotypes. Which cross represents the genotypes of individuals II 1 and II 2?

TT x TT

TT x Tt

Tt x Tt

Tt x tt

tt x tt

49.

How many males are carriers?

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Non-Mendelian Genetics

Total questions: 49

Worksheet time: 1hrs 14mins

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