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Genetics

Total questions: 40

Worksheet time: 10hrs 0mins

Name
Class
Date
1.
Are recessive traits shown with capital or lowercase letters? 
a)
Capital
b)
Lowercase
2.
The physical appearance or the way a gene looks is known as it's....
a)
genotype
b)
allele
c)
gene
d)
phenotype
3.
An allele or gene that always shows is
a)
recessive
b)
dominant
c)
hidden
d)
present
4.
Two of the same genes for a trait (sometimes called purebred). BB or bb
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
5.
Two different genes for a trait (sometimes called hybrid). Bb
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
6.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
7.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
8.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
9.
___________________________ is the field of science that studies of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
10.
He is known as the father of modern day genetics.
a)
Gregory Mendel
b)
Greg Mendel
c)
Gregor Mendel
d)
Grace Mendel
11.
Which is a true statements about this picture?
a)
Brown is recessive
b)
Brown is dominant
c)
Blue is dominant
d)
Blue is codominant
12.
What are the possible phenotypes in this punnett square?
a)
Bb, bb, BB
b)
purple, white
c)
Bb, bb
d)
light purple
13.
What is a genotype? 
a)
The genetic make up (code)
b)
The physical trait
14.
Tall is dominant to short. What is the phenotype of this organism?
Tt
a)
tall
b)
short
15.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
16.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
17.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
18.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
19.
Who is considered the "father of genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
James Watson
d)
Justin Bieber
20.
T = tall an t = short
What is the phenotype for Tt?
a)
short
b)
tall
c)
medium sized
d)
neither tall or short
21.
In a Punnett square each box represents a(n)....
a)
offspring
b)
parent
c)
gene
d)
trait
22.

Which of these are characteristics of inherited traits?

a)

being able to speak in front of a crowd

b)

having green eyes and brown hair

c)

mastering your multiplication facts

d)

becoming a teacher

23.

A mutation is harmful to an organism if it

a)

changes the phenotype of an organism

b)

changes the DNA segment

c)

reduces the organism's chance of survival

d)

makes the organism better able to avoid predators

24.

If a homozygous black cat (BB) is crossed with a homozygous white cat (bb), what is the probability of having a cat with white fur?

a)

100%

b)

0%

c)

75%

d)

25%

25.

A mutation that is missing a nitrogen base is

a)

deletion

b)

substitution

c)

addition

d)

mixing

26.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
27.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
28.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
29.

Where is the majority of DNA stored within a cell?

a)

Chloroplast

b)

Cell wall

c)

Cell membrane

d)

Nucleus

30.

What is one advantage of sexual reproduction?

a)

offspring are identical to parents

b)

offspring are resistant to viruses

c)

offspring are born live, rather than from eggs

d)

offspring inherit a wider variety of genetic information

31.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness? 
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
32.

What is the probability that the offspring will be homozygous recessive?

a)

25%

b)

50%

c)

75%

d)

100%

33.

What is the probability that the offspring will express the dominant trait?

a)

25%

b)

50%

c)

75%

d)

100%

34.
Sexual reproduction creates genetic ____________
a)
Is like cloning
b)
Identical, it involves one parent
c)
Diversity, it involves 2 parents
d)
Hocuspocus
35.
Another word for homozygous is...
a)
purebred
b)
hybrid
c)
heterozygous
d)
dominant
36.
The dominant trait in this punnett square is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
37.

long, twisted strand of a molecule that stores genetic material

a)

nucleus

b)

DNA

c)

cells

38.
Black fur (B) is dominant. Find the probability of a black offspring in a cross: bb x bb. 
a)
0%
b)
25%
c)
50%
d)
100%
39.
What is NOT a possible offspring genotype? 
a)
BB
b)
Bb
c)
bb
40.
Round seeds (R) are dominant to wrinkled seeds (r). What is the genotype for a wrinkled offspring?
a)
RR
b)
Rr
c)
rr

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