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Unit 5 DNA and Heredity

Total questions: 59

Worksheet time: 2hrs 57mins

Name
Class
Date
1.
In DNA, Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
2.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
3.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
4.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
ribosome
d)
nucleus
5.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
6.
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
7.
Which 2 molecules forms the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
sugar and the nucleus
d)
deoxyribose (sugar) and phosphate
8.
adenine, guanine, cytosine, and thymine are known as
a)
sugars
b)
phosphates
c)
lipids
d)
nitrogen bases
9.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
10.
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
11.

This is what part of the nucleotide?

a)

phosphate group

b)

nitrogen base

c)

sugar

d)

fatty acid

12.

What makes up the SIDES of a DNA ladder?

a)

nitrogen bases

b)

Deoxyribose sugars & phosphates

c)

genes & chromosomes

d)

RNA

13.

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

a)

sugars & phosphates

b)

nitrogen bases

c)

sugars

d)

genes & chromosomes

14.

According to the Base pair rule, if a DNA molecule contains 2 cytosine's how many guanines will it contain?

a)

1500

b)

2

c)

0

d)

1000

15.

The diagram shows the parts of a nucleotide for DNA. What part does "A" represent?

a)

Phosphate

b)

Deoxyribose Sugar

c)

Nitrogenous Base

d)

Ribose Sugar

16.

The diagram shows the parts of a nucleotide for DNA. What part does "B" represent?

a)

Phosphate

b)

Deoxyribose Sugar

c)

Nitrogenous Base

d)

Ribose Sugar

17.

The diagram shows the parts of a nucleotide for DNA. What part does "C" represent?

a)

Phosphate

b)

Deoxyribose Sugar

c)

Nitrogenous Base

d)

Ribose Sugar

18.
Who is responsible for producing this image?
a)
Francis Crick
b)
James Watson
c)
Rosalind Franklin
d)
Watson and Crick
19.
Who were the first guys to build a model of a DNA molecule?
a)
Larry, Moe, and Curley Joe
b)
Watson and Crick
c)
Watson and Holmes
d)
Superman and Batman
20.

Which of the following is correctly matches: ATT GTA CGA

a)

TAA CAT GCT

b)

ATT GTA CGA

c)

TAA GTA TCG

d)

GCC ACG TAC

21.

Different forms of a gene

a)

allele

b)

genotype

c)

phenotype

22.

The physical look of a trait

a)

genotype

b)

phenotype

c)

allele

d)

Mendelian inheritance

23.

When you have two different alleles

a)

recessive

b)

dominant

c)

homozygous

d)

heterozygous

24.

When you have two of the same alleles

a)

dominant

b)

homozygous

c)

recessive

d)

heterozygous

25.
The observable traits of an organism are known as its
a)
allele
b)
dominance
c)
phenotype
d)
genotype
26.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
27.
Which of the following answers correctly represents this Punnett Square if freckles are dominant?
a)
25% chance freckles
b)
50% chance freckles
c)
75% chance freckles
d)
100% chance freckles
28.
Which of the following answers correctly represents this Punnett Square if freckles are dominant?
a)
25% chance freckles
b)
50% chance freckles
c)
75% chance freckles
d)
100% chance freckles
29.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
30.

In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, how many offspring would be black?

a)

0

b)

1

c)

2

d)

3

e)

4

31.
Genes always appear in pairs. Your parents donate ________ allele for every trait.
a)
1
b)
2
c)
23
d)
46
32.

What is NOT an inherited trait of humans?

a)

playing a piano

b)

Freckles

c)

Hair color

d)

Height

33.
A __________ is a segment of DNA that codes for a particular protein, which leads to a particular trait.
a)
Gene
b)
Allele
c)
Codon
d)
Nucleotide
34.

What is the probability of Aa?

a)

50%

b)

100%

c)

25%

d)

0%

35.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
36.
___________________________ is the study of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
37.
One trait that is ALWAYS present and causes the other traits to disappear is a ________________________
a)
recessive trait
b)
aggressive trait
c)
absent trait
d)
dominant trait
38.
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
39.
What is a recessive allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
40.
The genes of an organism
a)
Mesotype
b)
Phenotype
c)
Teletype
d)
Genotype
41.
This means Same Gene
a)
Dominant
b)
Recessive
c)
Heterozygous
d)
Homozygous
42.
This means Different Gene
a)
Dominant
b)
Recessive
c)
Homozygous
d)
Heterozygous
43.

How many chromosomes can be found in a normal human body?

a)

55

b)

86

c)

46

d)

23

44.

Brandon is homozygous dominant for brown eyes. He marries a girl named Shelly, who is homozygous recessive for blue eyes. If brown eyes are dominant, and blue eyes are recessive, what will their children look like?

a)

All their children will have blue eyes outlined with brown.

b)

All their children wil have brown eyes.

c)

All their children will have blue eyes.

d)

Their children will have hazel eyes.

45.

What are genotypes?

a)

The allele combination for a trait (Ex; Tt, TT, tt)

b)

The physical appearance of an organism (Ex; short, tall)

c)

They are another word for chromosomes.

46.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
47.

Which genotypes are heterozygous?

a)

EE

b)

tt

c)

Rr

d)

Both EE and tt

48.

Which of the following is homozygous recessive?

a)

RR

b)

Rr

c)

rR

d)

rr

49.

The likelihood of an event

a)

Homozygous

b)

Genotype

c)

Probability

d)

Heterozygous

50.

When an organism has two DIFFERENT alleles for a trait

a)

Phenotype

b)

Genotype

c)

Homozygous

d)

Heterozygous

51.

Different forms of a gene

a)

Homozygous

b)

Heterozygous

c)

Alleles

d)

Genetics

52.

A form of a characteristic (a feature)

a)

Probability

b)

Alleles

c)

Trait

d)

Genetics

53.

A dominant trait: CHOOSE 2

a)

will block a recessive trait

b)

is shown with a capital letter

c)

always occurs more often

d)

is better

54.

HH is

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

d)

neither dominant nor recessive

55.

If long hair (H) is dominant to short hair (h), what is the phenotype of Hh?

a)

Long hair

b)

Dominant

c)

Medium hair

d)

Recessive

56.

Hybrid is another way of saying

a)

heterozygous

b)

purebred

c)

dominant

d)

recessive

57.

If brown (B) is dominant to blue (b), what are the possible phenotype(s) of this cross?

a)

Brown and blue

b)

Bb and bb

c)

Brown

d)

Bb

58.

Which of the following have you inherited completely from your parents? Choose the best answer.

a)

The shape of your blood cells

b)

Your intellegence

c)

Your personality

d)

Your weight

59.

Based on the Punnett square, what percentage of the offspring will be yellow?

a)

25%

b)

50%

c)

75%

d)

100%

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