How are chromosomes and genes alike?(1 point)
Responses
They both contain genetic material.
They both contain genetic material.
They are both part of DNA.
They are both part of DNA.
They are both found on chromatids.
They are both found on chromatids.
They both encode a single protein.
They both contain genetic material.
In pea plants, the allele for round peas, R, is dominant over the allele for wrinkled peas, r. What is the phenotype of a pea plant with genotype Rr? **Make a punnet square for help**(1 point)
Responses
some round and some wrinkled
some round and some wrinkled
slightly wrinkled
slightly wrinkled
round
round
wrinkled
round
They are expressed whenever present.
In a certain dog breed, the allele B for a black coat is dominant, and the allele b for a spotted coat is recessive. What genotypes for this dog breed would lead to a spotted phenotype? **Make a Punnet square for help**(1 point)
Responses
BB
BB
Bb
Bb
BB and bb
BB and bb
bb
bb
Which statement is true of all proteins?(1 point)
Responses
They are created by mutations in DNA.
They are created by mutations in DNA.
They carry oxygen in human blood.
They carry oxygen in human blood.
Their main function is to cause mutations.
Their main function is to cause mutations.
Their structure is related to their function.
Their structure is related to their function.
What is the main benefit of genetic biodiversity?(1 point)
Responses
Genetic biodiversity helps individuals compete with each other.
Genetic biodiversity helps individuals compete with each other.
Genetic biodiversity helps populations avoid predators.
Genetic biodiversity helps populations avoid predators.
Genetic biodiversity helps individuals produce more offspring.
Genetic biodiversity helps individuals produce more offspring.
Genetic biodiversity helps populations adapt to environmental changes.
Genetic biodiversity helps populations adapt to environmental changes.
Three plants are grown in the same environmental conditions with equal sunlight, water, and space to grow. One plant grew to have a purple flower while the other two grew white flowers. What is the most likely conclusion that can be made for the change in flower color?(1 point)
Responses
Environmental conditions caused the differences in flower color.
Environmental conditions caused the differences in flower color.
Genetic factors caused environmental changes that caused the differences in flower color.
Genetic factors caused environmental changes that caused the differences in flower color.
Genetic factors caused the differences in flower color.
Genetic factors caused the differences in flower color.
Environmental factors caused a genetic mutation that caused the differences in flower color.
Genetic factors caused the differences in flower color.
chromatid
Which statement about genetic material is correct?(1 point)
Responses
Genes encode deoxyribonucleic acid.
Genes encode deoxyribonucleic acid.
Chromatids contain chromosomes.
Chromatids contain chromosomes.
Centromeres connect two chromosomes.
Centromeres connect two chromosomes.
Chromosomes are made up of genes
Chromosomes are made up of genes
Chromosomes are made up of genes.
In pea plants, the allele for tall height, T, is dominant over the allele for short height, t. A pea plant has two different alleles for height. Which statement about the pea plant is correct?(1 point)
Responses
The phenotype for height is short, and the genotype is Tt.
The phenotype for height is short, and the genotype is Tt.
The phenotype for height is tall, and the genotype is Tt.
The phenotype for height is tall, and the genotype is Tt.
The phenotype for height is short, and the genotype is tt.
The phenotype for height is short, and the genotype is tt.
The phenotype for height is tall, and the genotype is TT.
The phenotype for height is tall, and the genotype is Tt.
How are the terms homozygous and heterozygous different?(1 point)
Responses
Homozygous describes having two of the same allele for a trait, and heterozygous describes having two different alleles for a trait.
Homozygous describes having two of the same allele for a trait, and heterozygous describes having two different alleles for a trait.
Homozygous describes having recessive alleles for a trait, and heterozygous describes having dominant alleles for a trait.
Homozygous describes having recessive alleles for a trait, and heterozygous describes having dominant alleles for a trait.
Heterozygous describes having two of the same allele for a trait, and homozygous describes having two different alleles for a trait.
Heterozygous describes having two of the same allele for a trait, and homozygous describes having two different alleles for a trait.
Homozygous describes having dominant alleles for a trait, and heterozygous describes having recessive alleles for a trait.
Homozygous describes having two of the same allele for a trait, and heterozygous describes having two different alleles for a trait.
How are the terms purebred and hybrid different?(1 point)
Responses
Purebred is a term used for a homozygous organism, and hybrid is a term used for a heterozygous organism.
Purebred is a term used for a homozygous organism, and hybrid is a term used for a heterozygous organism.
Purebred is a term used for an organism with recessive alleles, and hybrid is a term used for an organism with dominant alleles.
Purebred is a term used for an organism with recessive alleles, and hybrid is a term used for an organism with dominant alleles.
Purebred is a term used for an organism with dominant alleles, and hybrid is a term used for an organism with recessive alleles.
Purebred is a term used for an organism with dominant alleles, and hybrid is a term used for an organism with recessive alleles.
Purebred is a term used for a heterozygous organism, and hybrid is a term used for a homozygous organism.
Purebred is a term used for a homozygous organism, and hybrid is a term used for a heterozygous organism.
What is the scientific term for a section of a chromosome?(1 point)
Responses
amino acid
amino acid
hemoglobin
hemoglobin
protein
protein
gene
gene
What is the scientific term used to describe a structural change in a gene?(1 point)
Responses
hemoglobin
hemoglobin
anemia
anemia
genetic code
genetic code
mutation
mutation
Which statement is an example of a beneficial mutation? (1 point)
Responses
A person has a mutation that causes him to be unable to fully digest lactose.
A person has a mutation that causes him to be unable to fully digest lactose.
A fawn in the forest has a mutation that causes its fur color to be white.
A fawn in the forest has a mutation that causes its fur color to be white.
A mosquito has a mutation that causes it to be more resistant to pesticides.
A mosquito has a mutation that causes it to be more resistant to pesticides.
A person has a mutation that causes her earlobes to be attached to her head.
A mosquito has a mutation that causes it to be more resistant to pesticides.
Which environmental factor would decrease plant growth?(1 point)
Responses
drought
drought
space
space
fertilizer
fertilizer
light
light
drought
What is the main function of camouflage?(1 point)
Responses
Camouflage helps organisms find mates.
Camouflage helps organisms find mates.
Camouflage helps organisms gain nutrients in their environment.
Camouflage helps organisms gain nutrients in their environment.
Camouflage helps organisms blend within their environment.
Camouflage helps organisms blend within their environment.
Camouflage helps organisms resist diseases.
Camouflage helps organisms blend within their environment.
What is a phenotype of an organism?(1 point)
Responses
an observable trait
an observable trait
a structure that carries genetic information
a structure that carries genetic information
a section of DNA
a section of DNA
a combination of alleles
an observable trait
What is an allele?(1 point)
Responses
the trait a gene controls
the trait a gene controls
a form of a gene
a form of a gene
a dominant form of a gene
a dominant form of a gene
the location of a gene on a chromosome
a form of a gene
What determines a trait of an organism?(1 point)
Responses
the number of dominant alleles
the number of dominant alleles
its phenotype
its phenotype
the combination of its alleles
the combination of its alleles
the number of copies of the gene
the combination of its alleles
Which statement is accurate about dominant alleles?(1 point)
Responses
They are expressed only when a recessive allele is not present.
They are expressed only when a recessive allele is not present.
They result in the trait of shortness in pea plants.
They result in the trait of shortness in pea plants.
They are indicated by lowercase letters.
They are indicated by lowercase letters.
They are expressed whenever present.
What is the name for one half of a chromosome?(1 point)
Responses
chromatid
chromatid
protein
protein
gene
gene
centromere