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Mendelian Genetics Vocabulary Practice

Total questions: 50

Worksheet time: 1hrs 9mins

Name
Class
Date
1.

Definition: The science of heredity

a)

Genetics

b)

Recessive

c)

Genotype

d)

Phenotype

2.
The physical characteristic of a trait. For example: A tall pea plant
a)
Genotype
b)
RNA
c)
DNA
d)
Phenotype
3.
The genetic makeup of a trait. For example: Tt or TT (T = tall height)
a)
Genetics
b)
Genotype
c)
Chromosome
d)
 Eye color
4.
The passing of genetic information from parent to offspring.
a)
Heredity
b)
Biology
c)
Dominance
d)
Crossing Over
5.
A sequence of DNA that codes for a protein and determines a trait.
a)
Sister Chromatid
b)
Homologous Chromosomes
c)
Genetics
d)
Gene
6.
A characteristic that varies among individuals. Examples include seed color and plant height.
a)
Chromosome
b)
DNA
c)
Trait
d)
Centromere
7.
The Austrian monk who studied pea plants. His experiments helped him draw conclusions about how traits are inherited.
a)
Gregor Johann Mendel
b)
Charles Darwin
c)
James Watson
d)
Anthony van Leeuwenhoek
8.
The study of heredity.
a)
Microbiology
b)
Genetics
c)
Chemistry
d)
Astronomy
9.

Which of the following is an example of Genotype?

a)

Tt

b)

Tall

10.

Which of the following is a Phenotype?

a)

Bb

b)

Brown Eyes

11.

The allele that is "quieter" and will not show if a dominant allele is present

a)

Dominant

b)

Recessive

c)

Traits

12.

The physical characteristic an organism inherits from parents

a)

Behavior

b)

Skill

c)

Traits

13.

Genetic letters/Makeup of an organism

a)

Genotype

b)

Allele

c)

Phenotype

14.

Physical characteristics, or visible traits of an organism

a)

phenotype

b)

genotype

c)

trait

15.

Two different alleles for the same trait.

a)

Heterozygous

b)

Homonzygous

c)

Dominant

16.

Two identical alleles for the same trait.

a)

Heterozygous

b)

Homozygous

c)

Dominant

17.

Which of the following Genotypes would be considered heterozygous

a)

BB

b)

gg

c)

Ff

d)

TT

18.

The trait expressed if you inherit Ff is the

a)

genotype

b)

recessive trait

c)

dominant trait

d)

homozygous

19.

An organism that inherits two different alleles from its parents.

a)

dominant

b)

homozygous

c)

recessive

d)

heterozygous

20.

The passing of genes from parents to offspring.

a)

Punnett square

b)

genetics

c)

probabiltiy

d)

heredity

21.

The genetic make-up of an organism; all the genes that an organism has

a)

genotype

b)

dominant

c)

phenotype

d)

recessive

22.

A term that describes an allele that is not expressed when combined with a dominant form of the allele.

a)

recessive

b)

gene

c)

homozygous

d)

phenotype

23.

An organism that inherits two of the same allele from its parents.

a)

dominant

b)

heterozygous

c)

phenotype

d)

homozygous

24.

A chart used to show all the ways genes from two parents can combine and be passed to offspring.

a)

pie chart

b)

test cross

c)

Punnett square

d)

pedigree

25.

The observable characteristics or traits of an organism

a)

genotype

b)

dominant

c)

phenotype

d)

homozygous

26.

An alternate form of a gene for a specific trait or gene

a)

genotype

b)

gene

c)

allele

d)

phenotype

27.

Another word for homozygous is

a)

purebred

b)

heterozygous

c)

hybrid

d)

dominant

28.

If something is heterozygous, it is also

a)

purebred

b)

dominant

c)

hybrid

d)

recessive

29.

What is the correct phenotype for this organism?

a)

BB

b)

green

c)

blue

d)

bb

30.

Short hair (S) is dominant to long hair (s). What are all of the possible genotypes for an offspring with long hair?

a)

SS

b)

Ss

c)

ss

31.

D = dimples d = no dimples

What is the genotype for a recessive offspring?

a)

DD

b)

Dd

c)

dd

32.

Green peas are dominant (G) to yellow peas (g). What is the genotype for a heterozygous dominant offspring?

a)

GG

b)

Gg

c)

gg

33.

You have two alleles on each gene. Where do your alleles come from?

a)

from the grandparents you most resemble

b)

your siblings

c)

your parents

d)

you make them by yourself

34.

In order for a recessive trait to be expressed,

a)

both alleles have to be recessive

b)

one allele has to be recessive while the other is dominant

c)

one allele has to be recessive

d)

both alleles have to be expressed with capital letters

35.

If pink grapefruit is dominant over yellow grapefruit, which are the possible genotypes for the pink grapefruit? (Check all that apply)

a)

GG

b)

Gg

c)

gg

36.

Which of these would express the dominant trait? (check all that apply)

a)

rr

b)

Rr

c)

RR

37.

How many kids are heterozygous?

a)

1

b)

2

c)

3

d)

4

38.

How many(#) kids are Homozygous?

a)

1

b)

2

c)

3

d)

4

39.

What is the Genotype of the parents?

a)

GG

b)

gg

c)

Gg

40.

Offspring is the same as

a)

descendants (kids)

b)

Parents

c)

Gametes

41.

Allele that shows when there is NO dominant allele. Write it as a lower case letter (g)

a)

Dominant Allele

b)

Recessive Allele

c)

Gene

d)

Genotype

42.

Heterozygous

a)

Genotype that has 2 different letters(alleles). (Gg)

b)

Genotype that has 2 of the same letters (alleles) (GG or gg)

c)

Is the same as pure bred.

43.

Homozygous

a)

Genotype that has 2 of the same letters. Example : GG or gg

b)

Genotype that has 2 different letters. Example: Gg

c)

Is the same as Hybrid

44.

Allele that always shows, write it as a capital letter (example : G)

a)

Dominant allele

b)

Recessive allele

c)

Phenotype

d)

Genotype

45.

The genetic code for a gene, write it as 2 letters (Example: GG, Gg, gg).

a)

Phenotype

b)

Allele

c)

Genotype

d)

DNA

46.

A piece of DNA that contains the code for a protein?

Example: Height, Eye color, hair color

a)

Phenotype

b)

Gene

c)

DNA

d)

Genotype

47.

Variations of a gene, example brown hair and black hair

a)

Alleles

b)

Gene

c)

Phenotype

d)

Genotype

48.

A recessive allele is represented by a (a)   letter.

49.

A dominant allele is represented with a (a)   letter

50.

Genotype: rr

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous dominant