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WorksheetsHonors Genetics Review
Total questions: 49
Worksheet time: 1hrs 7mins
Name
Class
Date
1.
What disease is characterized by abnormally shaped red blood cells?
a)
hemophilia
b)
sickle cell anemia
c)
phenylketonuria
d)
Huntington's
2.
Which disorder is characterized by the inability to break down a specific amino acid and can be treated by a special diet?
a)
Huntington's
b)
Tay Sachs
c)
Cystic fibrosis
d)
PKU
3.
Which genetic disorder is caused by a dominant allele?
a)
Huntington's
b)
Hemophilia
c)
Cystic fibrosis
d)
PKU
4.
This genetic disorder is inherited by a recessive allele found on the X chromosome.
a)
PKU
b)
Cystic fibrosis
c)
Down's syndrome
d)
Hemophilia
5.
Which genetic disorder is sex-linked?
a)
Huntington's
b)
cystic fibrosis
c)
red-green colorblindness
d)
sickle cell anemia
6.
Which disorder is characterized by degradation of the nervous system and usually results in death during infancy?
a)
Tay-Sachs
b)
Cystic fibrosis
c)
Huntington's
d)
PKU
7.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
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.
Having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
10.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
Ggg
11.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75% tall and 25% short
c)
100% short
d)
100% tall
12.
Who is considered the "father of genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
James Watson
d)
T.A Knight
13.
How many girls in this family express this recessive disorder?
a)
4
b)
5
c)
6
d)
7
14.
Humans have ________ pairs of chromosomes.
a)
21
b)
23
c)
46
d)
22
15.
Uncontrollable cell growth is known as _____
a)
cystic fibrosis
b)
cancer
c)
diabetes
d)
hepatitis
16.
The cell spends most of it's life in ________________.
a)
mitosis
b)
cytokinesis
c)
Interphase
d)
None of the above
17.
Where does a cell contain it's genetic material?
a)
nucleus
b)
cytoplasm
c)
cytoskeleton
d)
golgi
18.
If a person with A type blood has a child with O blood, what must his genotype be?
a)
Homozygous for the A allele
b)
Heterozygous for A type blood
c)
Homozygous recessive
19.
Before the cell divides, what process needs to happen?
a)
Transcription
b)
Translation
c)
Replication
d)
Protein synthesis
20.
Replicate the following strand of DNA:
AAT CAT GGA
AAT CAT GGA
a)
AAT CAT GGA
b)
TTA GTA CCT
c)
UUA GUA CCU
d)
GGA TAU CUA
21.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
22.
The bonds that hold the two strands of DNA together come from...
a)
the attraction of phosphate groups
b)
strong bonds between bases and sugars
c)
carbon to carbon bonds in the sugar
d)
weak hydrogen bonds between the bases
23.
Name this structure...
a)
double helix
b)
nucleotide
c)
twisted ladder
d)
hydrogen bond
24.
Any change in the sequence of DNA is...
a)
transgenic shift
b)
single Genotype
c)
monohybrid Trait
d)
mutation
25.
What is the function of mRNA?
a)
carry info from genes to ribosomes
b)
carry amino acids to ribosomes
c)
help with RNA splicing
d)
make up ribosomes
26.
What is the function of tRNA?
a)
carry info from genes to ribosomes
b)
carry amino acids to ribosomes
c)
help with RNA splicing
d)
make up ribosomes
27.
Which of these contains the anticodon?
a)
mRNA
b)
tRNA
c)
rRNA
d)
Your little sister
28.
Where does translation take place?
a)
Nucleus
b)
Ribosome
c)
Golgi Body
d)
Cytoplasm
29.
RNA is different from DNA in ___
a)
RNA is single stranded
b)
RNA has uracil
c)
RNA has the sugar ribose
d)
All of these
30.
What is occurring in this picture?
a)
Translation
b)
DNA Replication
c)
Polymerase is unzipping the DNA
d)
Transcription
31.
Which process is shown?
a)
diffusion
b)
repiration
c)
recombination
d)
translation
32.
What is a gene?
a)
A segment of RNA that encodes for a protein
b)
A chromosome
c)
A segment of DNA that encodes for a protein
d)
Your genome
33.
What are the building blocks of proteins called?
a)
DNA
b)
RNA
c)
Ribosomes
d)
Amino Acids
34.
What is the first step in protein synthesis?
DNA -> mRNA
DNA -> mRNA
a)
transcription
b)
translation
c)
replication
d)
mutation
35.
A man with blood type O marries a woman with blood type AB. What is the probability they will have a child with type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
36.
In humans, having dimples is dominant over not having dimples. If a woman without dimples marries a man heterozygous for dimples, what is the likelihood that their children will have dimples?
a)
25%
b)
50%
c)
75%
d)
100%
37.
In humans, having dimples is dominant over not having dimples. If both parents are heterozygous for dimples, what is the likelihood that their children will have dimples?
a)
25%
b)
50%
c)
75%
d)
100%
38.
In humans, having dimples is dominant over not having dimples. If both parents are heterozygous for dimples, what is the expected GENOTYPE RATIO for their offspring?
a)
1:2:1
b)
3:1
c)
1:1
d)
1:0:0
39.
Unfortunately, Huntington's Disease is a dominant disorder whose symptoms do not appear until mid- to late - thirties. If a woman heterozygous for Huntington's marries a man who does not have Huntington's, what is the likelihood that their children will have the disorder?
a)
25%
b)
50%
c)
75%
d)
100%
40.
A black sheep mates with a white sheep, and all of the offpsring are GREY. This is an example of which type of inheritance?
a)
Incomplete Dominance
b)
Codominance
c)
Sex-Linked Inheritance
d)
Recessive Inheritance
41.
In sheep, wool color can be black, white or (heterozygous) grey. If a black sheep mates with a grey sheep, what would be the expected phenotypes of their offspring?
a)
100% Black
b)
75% Black, 25% White
c)
25% Black, 50% Grey, 25% White
d)
50% Black, 50% Grey
42.
Red tulips when crossed with white tulips produce (heterozygous) pink tulips. This is an example of which type of inheritance?
a)
Multiple Allele Blood Types
b)
Sex-Linked
c)
Incomplete Dominance
d)
Codominance
43.
Red tulips when crossed with white tulips produce (heterozygous) pink tulips. If two pink tulips are crossed, what would be the expected outcomes for the offspring?
a)
100% Pink
b)
50% Red, 50% White
c)
50% Red, 50% Pink
d)
25% Red, 50% Pink, 25% White
44.
An individual with type A blood marries an individual with type B blood and yet they have a child with type O blood. What must be the genotypes of the parents?
a)
IAi and IBi
b)
IAIA and IBIB
c)
IAIB and IAIB
d)
ii and IBIB
45.
The allele for colorblindness is a recessive, sex-linked trait carried on the X chromosome. If a female is colorblind, what does this mean for any sons she may have?
a)
There is too little information, it depends on who she marries.
b)
All of her sons will have normal vision.
c)
All of her sons will be colorblind.
d)
All of her sons will be carriers for colorblindness.
46.
The allele for colorblindess is a recessive, sex-linked trait carried on the X chromosome. A colorblind male marries a homozygous normal vision female. Which of the following statements would be true regarding their children?
a)
All male children will be colorblind.
b)
All female children will be colorblind.
c)
All male children will be carriers for colorblindness.
d)
All female children will be carriers for colorblindness.
47.
The allele for colorblindess is a recessive, sex-linked trait carried on the X chromosome. If a female is a carrier for colorblindess and marries a colorblind male, what would be the expected outcomes for their children?
a)
50% normal vision, 50% colorblind
b)
25% normal vision, 75% colorblind
c)
75% normal vision, 25% colorblind
d)
100% colorblind
48.
The shaded individuals in the pedigree represent those with the expressed _____________ trait.
a)
Recessive
b)
Dominant
49.
Imagine the shaded individuals are those WHO CANNOT "ROLL" THEIR TONGUE. What must be the genotype of individual II-1?
a)
TT
b)
tt
c)
Tt
d)
Impossible to tell
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