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DNA and Genetics Review 1

Total questions: 26

Worksheet time: 27mins

Name
Class
Date
1.
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
2.
T = tall an t = short
TT and Tt would result in  the following phenotype
a)
short
b)
tall
c)
both tall and short
d)
neither tall or short
3.
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%
4.
Purebred is another word for __________, while hybrid is another word for __________.
a)
dominant; recessive
b)
recessive; dominant
c)
homozygous; heterozygous
d)
heterozygous; homozygous
5.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
6.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
7.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
8.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
9.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
10.
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%
11.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
12.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
13.

Base that pairs with thymine.

a)

guanine

b)

cytosine

c)

adenine

d)

phosphate

14.

The base that pairs with guanine.

a)

cytosine

b)

adenine

c)

phosphate

d)

thymine

15.

A complex molecule containing the genetic information that makes up the chromosomes.

a)

deoxyribose

b)

deoxyribonucleic acid (DNA)

c)

nucleotide

d)

gene

16.

Two strands of nucleotides wound about each other; the shape of DNA.

a)

helix

b)

spiral

c)

double helix

d)

ladder

17.

When bases do not pair up correctly. It changes the genetic sequence.

a)

genetic mutation

b)

disease

c)

genetic error

d)

mutant

18.

The chemicals that make up the rungs of the DNA ladder.

a)

deoxyribose

b)

phosphate

c)

nitrogen bases

d)

nucleotides

19.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
20.
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
21.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
22.

What is a section of DNA that codes for a specific protein called?

a)

RNA

b)

replication

c)

gene

d)

protein

23.

How many chromosomes do most humans have?

a)

46, 23 pairs

b)

23, 46 pairs

c)

At least 4 or so

d)

XX is a Female

XY is a Male

24.

Which of the following are PHENOTYPES?

a)

red hair

b)

Gg

c)

Seven Toes

d)

SS

e)

cc

25.

Which of the following are GENOTYPES?

a)

crooked pinky finger

b)

Dd

c)

QQ

d)

Orange teeth

e)

ff

26.
Which 23rd chromosome combination would result in a person being FEMALE?
a)
XY
b)
XX
c)
YY
d)
XZ 

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