WorksheetsGenetics + DNA Review
Total questions: 27
Worksheet time: 18mins
In a plant that has red flowers, red flower color (R) is dominant to white flower color (r). If the plant is heterozygous for flower color, which alleles will be carried by the gametes it produces?
R and r
R only
r only
Rr only
Timothy has attached earlobes like his maternal grandfather. His mother and father both have free earlobes, which are dominant. Which statement best explains how Timothy inherited attached earlobes?
He received a recessive allele from each parent
He received a dominant allele from each parent
He received a recessive allele from his mother and a dominant allele from his father
He received a dominant allele from his mother and a recessive allele from his father
Mustard gas removes guanine from DNA. This can cause serious multiple deformities because guanine ...
is one of the nitrogenous bases of DNA
forms all the connections between bases in DNA
supports the structure of ribosomes
produces energy for the transfer of genetic information
In eukaryotic cells, the process of DNA --> mRNA occurs in the ________.
cytoplasm
ribosome
nucleus
cell membrane
The model of DNA used today was proposed by James Watson and Francis Crick in 1953. In this model, what sequence of bases would be complementary to
A-G-C-T-A?
A-G-C-T-A
C-G-C-A-T
A-T-C-G-A
T-C-G-A-T
The chances of developing cancer, diabetes, or sickle cell anemia are higher if a family member also has the disease because they are
highly infectious
passed through blood contact
genetic
related to diet
What was Chargaff's contribution to the discovery of the structure of DNA?
He built the first logical model
He took an x-ray diffraction photograph of DNA
He discovered the anti-parallel nature of DNA
He discovered the complimentary base pairing of DNA
Where does translation occur?
mitochondria
cytoplasm
ribosomes
nucleus
Which comes first?
DNA replication
Transcription
Translation
Which of the following is most responsible for carrying coded information from the nucleus?
cell membrane
ribosomes
ATP
mRNA
Having three copies of a chromosome is called ________
trisomy
polyploidy
monoploidy
monosomy
Having one copy of a chromosome is called ________.
Trisomy
Polyploidy
Monoploidy
Monosomy
Which scientist took this photograph and what does it show? (hint: this is an x-ray!)
Watson and Crick; the DNA double helix
Chargaff; complementary base pairing
Franklin: complementary base pairing
Franklin: DNA double helix
Which gender is an individual with a XY chromosomes?
Male
Female
Does this individual have a disorder?
Yes
No
In rabbits, short fur (F) is dominant to long fur (f). According to the Punnett square, what is the chance of two heterozygous short-haired rabbits having offspring with short fur?
one in four
two in four
three in four
four in four
Which phase of the cell cycle lasts the longest?
Metaphase
Cytokinesis
Interphase
Anaphase
How does cytokinesis occur in animal cells?
Cell wall crumbles
Cell membrane pinches inward
Chromosomes line up in the middle of the cell
cell plate forms
Which of the following apply to RNA?
Single stranded
Double stranded
Uracil
Thymine
Sugar is ribose
Sex-linked disorders are carried on what chromosome?
X
Y
What is the genetic makeup of an individual?
Genotype
Phenotype
The physical characteristics of an individual are called its ___________.
Genotype
Phenotype
What is the genotypic ratio of the result of a cross between two heterozygous individuals?
1:2:1
3:1
0:1:2
What is the phenotypic ratio of the result of a cross between two heterozygous individuals?
1:2:1
3:1
0:1:2
What process is DNA --> RNA?
DNA replication
Transcription
Translation
Adenine bonds with ________.
Guanine
Cytosine
Thymine
What process is RNA --> Proteins?
DNA Replication
Transcription
Translation
