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Genetics

Total questions: 39

Worksheet time: 24mins

Name
Class
Date
1.

Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.

a)

Protein

b)

DNA

c)

RNA

d)

Glucose nucleic acid (GNA)

2.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
3.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
4.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
5.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
6.

T - tall and t = short

In the punnett square below, what belongs in the missing square

a)

tt

b)

Tt

c)

Bb

d)

TT

7.

B = brown eyes

b = blue eyes

One brother has genotype BB and the other brother has genotype Bb.

Which statement is true about these two brothers?

a)

They have same phenotype and genotype

b)

They have different phenotypes and genotypes

c)

They have same phenotype, but different genotypes

d)

They have different phenotypes, but the same genotype

8.

Which of the following would be a phenotype?

a)

Aa

b)

red hair

c)

heterozygous

d)

DNA

9.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
10.

Which of the following genotypes is homozygous dominant?

a)

Yy

b)

yY

c)

yy

d)

YY

11.

Which of the following genotypes is homozygous recessive?

a)

Tt

b)

tt

c)

TT

d)

tT

12.

What is the genotypic ratio of the offspring?

a)

3:1

b)

1:3

c)

1:2:1

d)

2:2

13.

How many alleles are in the genotype for a simple trait?

a)

1

b)

2

c)

3

d)

4

14.

Who is considered the "father of genetics"?

a)

Reginald Punnett

b)

Gregor Mendel

c)

James Watson

d)

Charles Darwin

15.

What are the phenotype percentages of the offspring?

(A-Brown fur color; a-white fur color)

a)

50 % Brown fur and 50% White fur

b)

25 % Brown fur and 75% White fur

c)

75 % Brown fur and 25% White fur

d)

0% Brown fur and 100% White fur

16.
The purpose of selective breeding is to 
a)
Get bigger animals
b)
get smaller animals
c)
create animals with desirable traits
d)
create animals with bad traits
17.
The transfer of a gene from the DNA of one organism into another organism in order to produce an organism with desired traits.
a)
Genetic Engineering
b)
Karyotype
c)
Pedigree
d)
Genome
18.
The process of selecting a few organisms with desired traits to serve as parents of the next generation.
a)
Gene Therapy
b)
Genome
c)
Selective Breeding
d)
Pedigree
19.
The chance that an event will occur is called?
a)
Prediction
b)
Solution
c)
Probability
d)
Procedure
20.

Mutations can be negative because

a)

They can cause cancer

b)

They can cause birth defects

c)

They can help an organism thrive in its environment.

d)

They can affect offspring.

21.

Mutations can benefit humans because they can:

a)

Cause illness

b)

Make an organism more suited to live in its environment.

c)

Make organisms live shorter lives

d)

Cause organisms to grow extra limbs.

22.

Chromosomes are found inside...

a)

the nucleus

b)

gene

c)

cytoplasm

d)

adenine

23.

What is it?

a)

cell

b)

chromosome

c)

nucleus

d)

gene

24.

A gene is a section of a chromosome?

a)
b)
25.

Сhoose the right order

a)

chromosome-cell-DNA-gene

b)

cell-gene-nucleus

c)

nucleus-cell-chromosome-DNA-gene

d)

cell-nucleus-chromosome-DNA-gene

26.

Chromosomes are made up of long lengths of...

a)

cell

b)

DNA

c)

nucleus

d)

membane

27.
Which of these is a learned behavior for a dog?
a)
walking on four legs
b)
rolling over on command
c)
barking
d)
panting 
28.
Which of these is an inherited trait for humans?
a)
knowing how to read
b)
speaking English
c)
being able to play the violin
d)
having two arms 
29.
Knowing how to read a book is an example of
a)
a physical trait
b)
an inherited behavior
c)
a learned behavior 
d)
an inherited trait
30.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
31.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
32.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
33.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
34.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
35.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
36.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
37.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
38.
 Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
39.
the physical look of a trait
a)
phenotype
b)
genotype
c)
recessive

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