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Genetics Review 2023 edits

Total questions: 36

Worksheet time: 41mins

Name
Class
Date
1.
An organism that needs two parents to reproduce is a(an)____________
a)
asexual reproducer
b)
sexual reproducer
c)
non-producer
d)
consumer
2.
The offspring from asexually reproduced organisms are?
a)
Different than their parents
b)
Identical to parents
c)
Like a combination from both parents
d)
A different species
3.
The genetic material of an offspring of sexually reproducing organisms is best described as–
a)
identical to that of the other offspring
b)
a copy of the genetic material of the mother
c)
a copy of the genetic material of the father
d)
genes from both parents, in unique combinations
4.
Tongue rolling, earlobes, dimples, and freckles are all examples of....
a)
Purebreds
b)
Genotypes
c)
Traits
d)
Pedigrees
5.
_____________________ is the appearance of an organism, or how it looks
a)
phenotype
b)
ratio
c)
recessive trait
d)
heredity
6.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
AA
7.
How many parents does asexual reproduction involve?
a)
one 
b)
two
c)
three
d)
four
8.
If two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is -
a)
identical to only one parent
b)
identical to all of its siblings
c)
a unique combination of traits
d)
the recessive traits of each parent
9.
In which type of cells will mitosis occur?
a)
egg cells
b)
sperm cells
c)
jail cells
d)
Body cells except the sperm and egg cells
10.
What is the number of chromosomes found in a human body cell?
a)
23
b)
46
c)
92
d)
47
11.
Before a cell can divide, what must happen?
a)
Nothing, it is always ready to divide
b)
The number of chromosomes must be cut in half
c)
The number of chromosomes must double
d)
The number of chromosomes must triple.
12.

At the end of mitosis you have _____ cells

a)

identical

b)

different

c)

identical twins

d)

variety

13.
products of meiosis are genetically
a)
different
b)
identical
14.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
15.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
16.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
17.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
18.
Which of the following is a genotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
blue eyes 
19.
Dominant or recessive?
tt
a)
Dominant 
b)
Recessive
20.
father of genetics
a)
Gregor Mendel
b)
James Watson
c)
Dr. Robbins
d)
Francis Crick
21.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
22.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
23.
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
24.
Red flower color is dominant to white flower  color in rose plants. What is the  expected result of a cross between two heterozygous rose plants?
a)
100% red
b)
75% red, 25% white
c)
50% red, 50% white
d)
75% white, 25% red
25.
B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 
a)
0%
b)
25%
c)
50%
d)
75%
26.
An organism's genotype describes 
a)
its physical characteristics
b)
the way it looks
c)
the alleles of the gene or its genetic makeup
27.

What is the name of the process in which new breeds and varieties of organisms are created using artificial selection?

a)

Artificial selection

b)

Natural selection

c)

Selective breeding

d)

Survival of the fittest

28.

One problem with selective breeding is

a)

creating a new species

b)

gene variety is lost

c)

extinction of a species

29.

Which of these is the first step in selective breeding flowers.

a)

Repeat the process only with the offspring with the desired traits

b)

watch the seeds grow

c)

Choose plants that have the desired trait to pollinate

d)

chose which trait is desirable

30.
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
31.
A farmer has bred his pineapple plants from the sweetest pineapples from his last harvest to get even sweeter pineapple plants. What is this an example of?
a)
Selective breeding
b)
Natural selection
c)
Extinction
d)
Mutagenesis
32.

How can farmers best use selective breeding to increase apple production?

a)

By limiting the number of trees growing so they can have more space.

b)

By choosing trees that are the largest in size.

c)

By increasing the amount of water and fertilizer the trees receive.

d)

By choosing trees that consistently have the most apples.

33.

An example of selective breeding is

a)

a dog breeder mating 2 dogs to make more dogs

b)

a farmer grows bees to pollinate the plants on his farm

c)

a person pollinates 2 white rose plants to only create white roses

34.
Evidence shows that the wolf is the ancestor to all of the breeds of dogs shown below. How did this variation arise in a relatively short period of time?
a)
A.  Genetic manipulation
b)
Natural selection
c)
Random chance
d)
Selective breeding
35.

Problems with selective breeding include

a)

Better animals

b)

Increased meat production

c)

Animals can have bad health problems

d)

more diversity

36.

Which is NOT a result of selective breeding?

a)

Large seedless watermelons that consumer demand

b)

Bright oranges that are all about the same size

c)

An insect that matches the color of the environment

d)

A dog that has been bred to have short hair

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