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LS Test 5 2021

Total questions: 55

Worksheet time: 3hrs 39mins

Name
Class
Date
1.

Which of the following is heterozygous?

a)

MM

b)

Mm

c)

mm

2.

Which of the following is homozygous dominant?

a)

RR

b)

Rr

c)

rr

3.

Which of the following is homozygous recessive?

a)

PP

b)

Pp

c)

pp

4.

What term refers to the physical expression of a gene?

a)

genotype

b)

phenotype

c)

appearance

d)

homologous

5.

What organism did Mendel study?

a)

pea plants

b)

onions

c)

mice

d)

cats

6.

Which term refers to the combination of genes or genetic makeup of an organism?

a)

genotype

b)

phenotype

c)

heterozygous

d)

homozygous

7.

Gregor Mendel is known as the _________________

a)

Modern Medicine

b)

Father of the Green Revolution

c)

Father of Genetics

d)

The Pea Plant Man

8.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
9.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
10.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
11.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
12.
What are the 4 nitrogen bases?
a)
adenine, thymine, cytoplasm, and guanine
b)
adenine, thymine cytosine, and guanine
c)
adenine, thymine, cytosine, and gylcerol
d)
adenine, thymine, cytosine, and glucose
13.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
14.
The sugar in DNA is ?
a)
sucrose
b)
glucose
c)
deoxyribose
d)
fructose
15.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
16.
X outlines a(n) ___________.
a)
amino acid
b)
nitrogen base 
c)
nucleotide
d)
nitrogen base pair
17.
A strand of DNA that looks like a twisted ladder is called a _____________________
a)
triple twist
b)
corkscrew
c)
double helix
d)
chain reaction
18.

The control center of the cell, containing DNA.

a)

nucleus

b)

ribosome

c)

cell membrane

d)

nucleotide

19.

What makes up the rungs (steps) of a DNA ladder?

a)

sugars & phosphates

b)

nitrogen bases

c)

sugars

d)

genes & chromosomes

20.

During mitosis the parent cell produces:

a)

2 daughter cells with the same number of chromosomes as the parent cell.

b)

2 daughter cells with the half the number of chromosomes as the parents cell.

c)

4 daughter cells with the same number of chromosomes as the parent cell.

d)

4 daughter cells with half the number of chromosomes as the parent cell.

21.

During meiosis the parent cell produces:

a)

2 daughter cells with the same number of chromosomes as the parent cell.

b)

2 daughter cells with the half the number of chromosomes as the parents cell.

c)

4 daughter cells with the same number of chromosomes as the parent cell.

d)

4 daughter cells with half the number of chromosomes as the parent cell.

22.

What is the type of reproduction that only requires one parent?

a)

Asexual

b)

Sexual

23.

Which type of reproduction results in diversity because the offspring are a combination of the parents and genetically different?

a)

Asexual

b)

Sexual

24.

What type of cell division is illustrated in the picture?

a)

Mitosis

b)

Meiosis

25.

Which two scientists are credited with correctly determining the double-helix model of DNA?

a)

Watson and Crick

b)

Wilkins and Franklin

c)

Wilkins and Crick

d)

Watson and Franklin

26.

The cells produced via meiosis are called:

a)

sex cells (gametes-egg and sperm)

b)

body cells (somatic cells)

c)

skin cells

27.

A human body cell usually has ___ chromosomes.

a)

6

b)

22

c)

4

d)

46

28.

What is the type of cell division associated with sexual reproduction?

a)

Mitosis

b)

Meiosis

29.

An organism that has been reproduced by sexual reproduction received ____________ of its chromosomes from the male parent.

a)

4

b)

25%

c)

50%

d)

100%

30.

What is it called when a sperm and egg join and form a zygote?

a)

meiosis

b)

fertilization

c)

cell division

d)

mitosis

31.

What is one reason we need meiosis?

a)

So the offspring has genes from both parents

b)

So the offspring has genes from one parent

c)

So the offspring has genes from neither parents

d)

So the offspring makes its own genes

32.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
33.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
34.
T = tall an t = short
What is the phenotype for Tt?
a)
short
b)
tall
c)
medium sized
d)
neither tall or short
35.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
36.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
37.
How many chromosomes are in a sex cell?
a)
46
b)
23
c)
26
d)
43
38.

The passing of traits from parent to offspring is __________.

a)

genetics

b)

heredity

c)

genes

d)

traits

39.
When a capital letter is used, what kind of allele is being represented?
a)
Recessive Allele
b)
Codominance
c)
Punnett Squares
d)
Dominant Allele
40.
I have 2 X chromosomes. What am I?
a)
Male
b)
Female
41.
I have 1 X chromosome and 1 Y chromosome. What am I?
a)
Male
b)
Female
42.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
43.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
44.

In a Punnett square, a lower case letter stands for a ____________ allele.

a)

dominant

b)

recessive

c)

homozygous

d)

heterozygous

45.
Ability to to ride a motorcycle
a)
inherited triat
b)
acquired trait
c)
genes
d)
Keelan
46.
Characteristics that are passed down from parents to offspring.
a)
Manners
b)
Acquired Traits
c)
Money
d)
Inherited Triats
47.
The study of Heredity
a)
science
b)
genetics
c)
english
d)
gene
48.

What does a Punnett Square determine?

a)

all of Mendel's discoveries about genetic crosses

b)

all the outcomes of a genetic cross

c)

only the recessive allele combinations

d)

only the dominant allele combinations

49.

Scientists call an organism with two different alleles for a trait

a)

factor

b)

purebred

c)

trait

d)

hybrid

50.

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%

51.

What does RR mean

a)

two dominant alleles

b)

heterozygous alleles

c)

at least one dominant allele

d)

one dominant and one recessive allele

52.

Which of the following is a phenotype

a)

bb

b)

Bb

c)

BB

d)

blue eyes

53.

Aa, DD, Bb, yy are all examples of _______

a)

genotypes

b)

phenotypes

54.

Which of the following genotypes would be considered heterozygous?

a)

BB

b)

gg

c)

Ff

d)

TT

55.

If something is homozygous, it can also be called____

a)

phenotype

b)

genotype

c)

hybrid

d)

purebred

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