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Chapter 3 Genetics

Total questions: 50

Worksheet time: 1hrs 1mins

Name
Class
Date
1.

The passing of traits from parents to offspring

a)

Heredity

b)

Genetics

c)

Punnett Square

d)

Genes

2.

The two types of alleles are (select two)

a)

dominant

b)

doughnut

c)

expressive

d)

recessive

3.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
4.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
5.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
6.
How many letters does a genotype contain?
a)
1
b)
2
c)
3
d)
4
7.

A dominant allele is expressed (visible) only if ...

a)

There are zero dominant alleles

b)

There is one dominant allele

c)

There are two dominant alleles

d)

There is at least one dominant allele

8.

A recessive allele is expressed (visible) only if ...

a)

There are zero recessive alleles

b)

There is one recessive allele

c)

There are two recessive alleles

d)

There is at least one recessive allele

9.

An allele whose trait is masked in the presence of a dominant allele

a)

Codominant

b)

Recessive

c)

Allele

d)

Dominant

10.

An organism with two different alleles for a trait, also know as heterozygous

a)

Purebred

b)

Dominant

c)

Hybrid

d)

Recessive

11.

Where in the cell is DNA found?

a)

Nucleus

b)

Cytoplasm

c)

Chloroplast

d)

Cell Membrane

12.

How many pairs of chromosomes do humans have?

a)

21

b)

22

c)

23

d)

24

13.

How are similarities passed from parent to offspring?

a)

through teaching

b)

through learning

c)

through blood

d)

through genes

14.

Factors that control traits

a)

Genes

b)

Alleles

c)

Punnett Square

d)

Homozygous

15.

Physical characteristics of organisms

a)

Genes

b)

Traits

c)

Genotype

d)

Probability

16.

An allele whose trait always shows up in the organism

a)

Dominant

b)

Recessive

c)

Codominant

d)

Heredity

17.

Different forms of a gene

a)

Purebred

b)

Hybrid

c)

Alleles

d)

Genetics

18.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
19.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
20.
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
21.

The scientific study of heredity

a)

Punnett Square

b)

Genetics

c)

Probability

d)

Homozygous

22.

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

a)

Punnett Square

b)

Genetics

c)

Probability

d)

Fusco Chart

23.

The likelihood that a particular event will occur

a)

Genetics

b)

Luck

c)

Probability

d)

Guessability

24.

The cytoplasm is the part of the cell in which

a)

DNA is located

b)

Chromosomes are located

c)

Proteins are made

d)

RNA is made

25.

A mutation that causes disease resistance in potatoes is a(n)

a)

harmful mutation

b)

helpful mutation

c)

neutral mutation

d)

environmental mutation

26.

Mendel's work was the foundation to understanding why

a)

The results of one genetic cross does not affect the outcome of a second cross

b)

Sex cells have half the number of chromosomes as body cells

c)

Protein synthesis occurs in cytoplasm

d)

Offspring have similar traits to those of their parents

27.

During meiosis, sex cells form when chromosome pairs are

a)

Doubled

b)

Separated

c)

Copied

d)

Combined

28.

A mutation is harmful to an organism if it

a)

Changes DNA of the organism

b)

Changes the phenotype of the organism

c)

Reduces the organism's chances for survival and reproduction

d)

Makes the organism better able to avoid predators

29.

What happens during Meiosis?

a)

Each sex cell loses half of its chromosomes

b)

Chromosome pairs separate to form new sex cells

c)

Each sex cell copies itself to form four new chromosomes

d)

Chromosome pairs remain together when new sex cells are formed

30.

Which of the following is when there is a change in the DNA sequence?

a)

Replication

b)

Mutation

c)

Transcription

d)

Translation

31.

A type of RNA that carries amino acids an adds them to the growing protein

a)

Transfer RNA

b)

Messenger RNA

c)

Pesta RNA

d)

Shank RNA

32.

RNA that copies the coded message from the DNA in the nucleus and carries the message into the cytoplasm.

a)

Smart RNA

b)

Messenger RNA

c)

Transfer RNA

d)

Kolonko RNA

33.

Which of the following is an example of a beneficial mutation?

a)

When an organism's lifespan becomes shorter.

b)

When an organism becomes unable to reproduce.

c)

When an organism's body becomes deformed.

d)

When an organism develops immunity to a disease.

34.

Mutations are...

a)

Changes in the sequence of DNA

b)

Broken chromosomes

c)

Bad genes

35.

A human body (somatic) cell usually has how many chromosomes?

a)

6

b)

22

c)

4

d)

46

36.
Why do we need meiosis?
a)
To double the number of chromosomes going into sex cells
b)
To halve the number of chromosomes going into sex cells
c)
To triple the number of chromosomes going into sex cells
d)
To not change the number of chromosomes going into sex cells
37.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
38.

AA

a)

Genotype

b)

Phenotype

39.
The physical appearance of an organism based on traits
a)
Genotype
b)
Phenotype
c)
Meiosis
d)
Genetics
40.
The allele combinations
a)
genetics
b)
mitosis
c)
genotype
d)
phenotype
41.
What did Gregor Mendel use to discover the principles that rule heredity?
a)
Pea Plant
b)
Pigeons
c)
Pear trees
d)
Photosynthesis
42.
What do we call the table used to calculate the probability of an offspring's genotype?
a)
Punnett square
b)
Venn diagram
c)
Golden ratio
d)
Fibonacci sequence
43.
Gregor Mendel is known as the father of _________
a)
Modern Medicine
b)
Father of the Green Revolution
c)
Father of Genitics
d)
The Pea Plant Man
44.
Are recessive traits shown with capital or lowercase letters? 
a)
Capital
b)
Lowercase
45.
The mathematical chance that something will happen is known as...
a)
chance
b)
luck
c)
probability
46.
An allele or gene that always shows is
a)
recessive
b)
dominant
c)
hidden
d)
present
47.
G = dominant green and y = recessive yellow
A fish has a Gy genotype, what will its phenotype be?
a)
yellow
b)
green
c)
greenish-yellow
d)
red
48.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
49.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
50.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists

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