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WorksheetsGenetics and DNA Review Quiz
Total questions: 58
Worksheet time: 58mins
What is the basic unit of heredity?
Gene
Protein
Cell
Chromosome
Who is known as the father of genetics?
Isaac Newton
Gregor Mendel
Albert Einstein
Charles Darwin
What is the structure of DNA?
Triple helix
Single strand
Double helix
Square shape
What are the building blocks of DNA?
Proteins
Lipids
Carbohydrates
Nucleotides
What is the function of chromosomes in the cell?
Storing water in the cell
Regulating cell division
Producing energy for the cell
Carrying genetic information
How many chromosomes are in a human cell?
46 chromosomes
10 chromosomes
50 chromosomes
23 chromosomes
What is a gene?
A type of cell found in the human body
A unit of heredity that is transferred from a parent to offspring
A type of carbohydrate found in plants
A sequence of DNA that contains the instructions for making a specific protein or set of proteins
What is the difference between genotype and phenotype?
Genotype is the genetic makeup, while phenotype is the physical characteristics.
Genotype is only relevant for plants, while phenotype is only relevant for animals
Genotype and phenotype are the same thing
Genotype is the physical characteristics, while phenotype is the genetic makeup
What is a Punnett square used for in genetics?
To calculate the average lifespan of an organism
To determine the dominant traits of an individual
To analyze the environmental factors affecting gene expression
To predict the possible genotypes of offspring in a genetic cross.
What is a dominant trait?
A genetic trait that is expressed when an individual has one copy of the dominant allele.
A genetic trait that is only expressed in females
A genetic trait that skips a generation
A genetic trait that is only expressed in males
What is a recessive trait?
A genetic trait that is only passed down from the mother.
A genetic trait that is always expressed, regardless of the presence of other alleles.
A genetic trait that is expressed only when an individual has two copies of the recessive allele.
A genetic trait that is expressed only when an individual has one copy of the dominant allele.
What is the genotype of a person with two dominant alleles?
Incomplete dominant
Heterozygous dominant
Homozygous recessive
Homozygous dominant
What is the phenotype of a person with one dominant and one recessive allele?
No phenotype
Recessive phenotype
Double dominant phenotype
Dominant phenotype
What is the structure of a nucleotide?
A nucleotide is composed of three phosphate groups and a sugar
A nucleotide is composed of a sugar, a phosphate group, and a nitrogenous base.
A nucleotide is composed of a protein, a phosphate group, and a nitrogenous base
A nucleotide is composed of a lipid, a phosphate group, and a nitrogenous base
What is the role of DNA in the cell?
Providing structure to the cell
Producing energy for the cell
Storing and transmitting genetic information
Regulating the cell's water balance
What is the function of a gene?
It is a unit of heredity and codes for a specific protein
It is responsible for the color of the cell
It is responsible for the size of the cell
It is responsible for the shape of the cell
What is the difference between a dominant and a recessive trait?
A dominant trait is always expressed, while a recessive trait is only expressed when two copies of the allele are present
A dominant trait is only expressed in males, while a recessive trait is only expressed in females
A dominant trait is only expressed in plants, while a recessive trait is only expressed in animals
A dominant trait is only expressed when two copies of the allele are present, while a recessive trait is always expressed
What is the process by which DNA is copied?
Translation
Replication
Transcription
Mutation
What is a genetic mutation?
A change in the sequence of DNA
A change in the number of chromosomes
A change in the shape of the cell
A change in the size of the cell
What is the process by which traits are passed from parents to offspring?
Transcription
Translation
Inheritance
Mutation
What is the difference between a gene and an allele?
A gene is a segment of DNA, while an allele is a variant form of a gene
A gene is a variant form of an allele, while an allele is a segment of DNA
A gene and an allele are the same thing
There is no difference between a gene and an allele
What is the process of creating an identical copy of an organism or cell?
Translation
Transcription
Cloning
Mutation
What is the term for a change in a DNA sequence that affects genetic information?
Transcription
Translation
Mutation
Inheritance
What is the process by which a cell divides to form two daughter cells?
Translation
Transcription
Mutation
Mitosis
What is the term for the study of heredity and the variation of inherited characteristics?
Ecology
Genetics
Evolution
Cell biology
In the punnett square below, what belongs in the missing square
A ___ is a device used to predict the genotypes and phenotypes of a particular cross.
Punnett Square
Dichotomous Key
The ____ trait is expressed even if present with a contrasting recessive allele.
dominant
recessive
neutral
_____ is the genetic makeup of an organism.
phenotype
genotype
An organism is ____ if they have two different alleles for a trait.
homozygous
heterozygous
An organism is ____ if they have identical alleles for a trait.
homozygous
heterozygous
Who is the father of genetics?
Mendel
Hooke
Linneaus
Darwin
What is another name for homozygous?
pure
hybrid
What is another term for heterozygous?
pure
hybrid
What is a phenotype?
a population of organisms who share similar DNA
the arrangement of genes responsible for determining traits
an observable expression of a trait in an organism
a trait that is passed from the father to male offspring
What is a genotype?
an identical gene that is passed through generations
the traits of an organism that can be observed
the type of species-specific traits that are found in populations of organisms
the genes within DNA that are responsible for a trait in an organism
A researcher found out that some related individuals can roll the lateral edges of their tongues while other related individuals are unable to do so. What could be said about the ability to roll tongues?
It a behavioral trait
It is an inherited trait.
It is a physiological trait.
It is an environmental trait.
Which of the following defines heredity?
the study of how behaviors are passed on from parent to offspring
the manipulated changing of a trait in an organism
the passage of genetic instructions from one generation to the next
the ability of organisms to adapt to their environment
Which statement best describes the relationship between inherited traits and genes?
An individual's inherited traits are determined by genes, which are located inside a person's chromosomes.
An individual's inherited traits are based on a person's environment, and the traits change over time.
Inherited traits are determined by a person's health and nutrition.
Inherited traits are determined only by a person's maternal parent.
What is a probable reason that a trait skips a generation?
The trait is recessive.
The trait is dominant.
The trait has been amplified.
The trait is extinct.
Albino rabbits are rabbits that don't have any pigmentation in their fur or eyes. Their eyes appear pink and their fur appears pure white. The gene for albinism is a recessive gene. If an albino rabbit (bb) breeds with a brown rabbit (Bb), what is the percent chance that they will produce an albino rabbit?
25%
50%
75%
100%
In squirrels, the gene for gray fur (G) is dominant over the gene for black fur (g). If 50% of a large litter of squirrels are gray, what was the most likely parental cross?
GO × GO
Gg × gg
gg × gg
GG × Gg
A pea plant has seeds that are green (G), the dominant color for this trait. If this plant always produces offspring with green peas, what is the probable genotype of the pea plant?
Gg
gg
GG
YY
What percent of the offspring in this Punnett Square are heterozygous?
100%
75%
50%
25%
The diagram above is of a Punnett Square for the cross between two guinea pigs. The mother is homozygous recessive for soft fur. The father is homozygous dominant for rough fur. What percent of the offspring will have soft fur?
75%
50%
25%
0%
