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Unit 3 - Genetics Review

Total questions: 45

Worksheet time: 23mins

Name
Class
Date
1.

Which letters best represent a parent who is Homozygous Dominant?

a)

Rr

b)

no letter is needed

c)

RR

d)

rr

2.

Co- means

a)

Unite

b)

One

c)

Same

d)

Together

3.

Which letters represent a Homozygous Recessive parent?

a)

Rr

b)

no letters are needed

c)

RR

d)

rr

4.

Zyg- means

a)

One

b)

Unite

c)

Show

d)

Different

5.

Dom- means

a)

Take Over

b)

Two

c)

Origin

d)

Together

6.

Which allele is always represented by a lowercase letter?

a)

codominant

b)

dominant

c)

all have to be uppercase

d)

recessive

7.

Homo- means

a)

One

b)

Marriage

c)

Different

d)

Same

8.

Which letters best represent a parent who is Heterozygous?

a)

Rr

b)

no letter is needed

c)

RR

d)

rr

9.

Gam- means

a)

Show

b)

Marriage, union

c)

Three

d)

Unite

10.

Phen- means

a)

Show

b)

Together

c)

Two

d)

Divorce

11.

If a mom has brown hair (dominant), and the dad has blond hair (recessive), what genotype would the mom have to have if they want a child with blond hair?

a)

BB

b)

Bb

c)

bb

d)

It's not possible

12.

For a dominant disorder, what genotype would you need to have to not have the disorder?

a)

Mm

b)

mm

c)

MM

13.

Hetero- means

a)

Different

b)

Two

c)

Development

d)

Egg

14.

Passing of traits from parents to offspring

a)

Heredity

b)

Allele

c)

Genotype

d)

Gregor Mendel

15.

The genetic makeup of a trait

a)

Genotype

b)

Phenotype

c)

Heterozygous

d)

Homozygous

16.

The physical appearance of a trait.

a)

Trait

b)

Genotype

c)

Phenotype

d)

Gene

17.

__1__ come in different forms called __2__ and code for __3__. (choose the correct order)

a)

1.) Genes

2.) Alleles

3.) Traits

b)

1.) Alleles

2.) Traits

3.) Genes

c)

1.) Traits

2.) Alleles

3.) Genes

d)

1.) Genes

2.) Traits

3.) Alleles

18.

According to Mendel (complete dominance), an organism that has the heterozygous genotype will show the _____ phenotype.

a)

Recessive

b)

Dominant

c)

Sex-linked

19.

Which of the following is the best representation of the image displayed?

a)

Incomplete Dominance

b)

Sex-linked

c)

Complete Dominance

d)

Codominance

20.

The image seen represents-

a)

Complete Dominance

b)

Incomplete Dominance

c)

Codominance

d)

Sex-linked

21.

Males are more likely to be carriers because they have 1 X chromosome

a)

True

b)

False

22.

The letters XX represent

a)

Male

b)

Female

23.

I understand that on my exam, I will be given a Punnett Square sheet that I must fill out and turn in to my teacher when I finish my exam. If I don't, I will get points taken off.

a)

Disagree

b)

Agree

24.

Which sex is more likely to exhibit a sex-linked trait?

a)

Male

b)

Female

25.

Only _____ can be carriers (sex-linked)

a)

Men

b)

Women

26.

If I cross a homozygous dominant parent (RR) with a homozygous recessive parent (rr), what percentage will resemble a heterozygous offspring?

a)

100% Rr

b)

25% Rr

c)

50% Rr

d)

50% Rr

27.

Black fur is dominant to white fur

a)

Incomplete dominance

b)

Complete dominance

c)

Sex-linked

d)

Codominance

28.

A red flower and a white flower make a pink flower

a)

Sex-linked

b)

Complete dominace

c)

Codominance

d)

Incomplete dominance

29.

ABO Blood Type

a)

Sex-linked

b)

Complete Dominance

c)

CoDominance

d)

Incomplete Dominance

30.

The two shaded squares in this pedigree represents -

(Choose the correct sex and what it means)

a)

Male, exhibits trait or disease

b)

Male, does not exhibit trait or disease

c)

Female, exhibits trait or disease

d)

Female, does not exhibit trait or disease

31.

Different forms of a gene

a)

Genotype

b)

Alleles

c)

Traits

d)

Punnett Squares

32.

What letters are missing in the Punnett Square?

a)

AB

b)

aa

c)

AA

d)

Aa

33.

Having a long nose, or being tall or short - these examples are:

a)

Genotype

b)

I-have-a-type

c)

Sex-linked

d)

Phenotypes

34.

If I have a heterozygous offspring (Bb), will they represent the dominant trait or recessive trait?

a)

Dominant

b)

Recessive

c)

Neither, not possible

d)

Both (codominant)

35.

When I study the root words for this exam, I know to look at-

a)

The back of my Unit 3 clarity checklist

b)

On the Codominance/Incomplete dominance worksheet

c)

My classmate's chromebook during the exam

d)

On the Genetics worksheet

36.

What letters are needed the replace the ??

a)

TT

b)

tt

c)

Tt

d)

tT

37.

On your exam, if I ask you to give me the % of two colors in question (ex: black vs gray), where will you place the % on your paper?

a)

Somewhere random, figure it out

b)

Under Phenotype

c)

Under Genotype

d)

Under Sex-linked

38.

A segment of DNA on a chromosome that codes for a specific trait

a)

Gene

b)

Mitochondria

c)

Photosynthesis

d)

Transcription

39.

A chart that shows all the possible combinations of alleles that can result from a genetic cross


a)

Punnett Square

b)

Pedigree

c)

Phenotype

d)

Photosynthesis

40.

If 2 parents are both carriers for a recessive albinism, what is the probability for the children to have albinism?

a)

100%

b)

75%

c)

50%

d)

25%

41.

What ensures each gamete gets only one copy of each allele and that each trait is transmitted separately?

a)

Law of Independent Assortment and DNA replication

b)

Mitosis and Meiosis

c)

Law of Independent Assortment and Law of Segregation

d)

Law of Segregation and Heredity

42.

True or False: It is possible to have a child with recessive features with one parent heterozygous (Hh) and the other homozygous recessive (hh).

a)

True

b)

False

43.

Which picture below correctly represents a Pedigree?

a)

b)

c)

d)

44.

An allele whose trait always shows up in the organism when the allele is present.

a)

Recessive

b)

Dominant

c)

Heterozygous

d)

Homozygous

45.

How many letters do I need to put in each quadrant of my Punnett Square?

a)

0

b)

1

c)

2

d)

3