Hairston Biology SB2a

Directions: Answer the following question(s).

1

How is sexual reproduction an advantage over asexual reproduction?

The formation of gametes in meiosis allows for genetic variation.

The formation of gametes in mitosis allows for genetic variation.

Meiosis results in harmful mutations in four new cells.

Mitosis results in identical DNA in two new cells.

1

Directions: Answer the following question(s).

1

The diagram below represents a change that occurred in a pair of chromosomes during the formation of an egg cell. The alteration that occurred will most likely be passed on to every cell that develops from the egg cell.
Why would this type of alteration result in offspring with combinations of traits that differ from those found in either parent?

It converts sex cells into body cells.

It results in the formation of diploid gametes.

It results in new combinations of genes on each chromosome.

It changes the chromosome number of the body cells that develop from the egg cell.

Directions: Answer the following question(s).

1

What are three sources of genetic variation?

genotypes, phenotypes, and polygenic traits

sexual reproduction, crossing over, and mutations

acquired traits, sexual reproduction, and mutations

single-gene traits, polygenic traits, and adaptive traits

1

Directions: Answer the following question(s).

1

The diagram shows a mutation that has occurred after recombination.
The mutation was inherited and passed along to the offspring by a chance occurrence. Which claim best describes what this type of mutation could cause?

the immediate evolution of the species

a difference in the offspring's parents

the appearance of a new trait in the offspring

a change to the environment of the species

1

One variety of sweet corn has kernels that turn red only when exposed to direct sunlight. The coloration of this variety shows what about gene expression?

The coloration shows that gene expression cannot be affected by any nongenetic factors.

The coloration shows that gene expression cannot be affected by environmental factors.

The coloration shows that gene expression can be affected by the environment.

The coloration shows that gene expression can be affected by temperature.

Directions: Answer the following question(s).

1

The diagram shows the process of crossing over.
Which claim about crossing over in chromosomes is best supported by the diagram?

Crossing over increases genetic diversity through deletion.

Crossing over decreases genetic diversity through mutation.

Crossing over increases genetic diversity by creating new combinations of genes.

Crossing over decreases genetic diversity by inserting nucleotides into gene sequences.

1

These homologous chromosomes carry different alleles of the A and B genes.
How would crossing over affect the distribution of the four alleles: $A$, $B$, $a$, and $b$?

Crossing over would always keep $A$ and $B$ together on the same chromosome, and always keep $a$ and $b$ together on the same chromosome.

Crossing over would always put $A$ and $B$ on different chromosomes, and always put $a$ and $b$ on different chromosomes.

Crossing over would sometimes, but not always, exchange the positions of $A$ and $a$, and of $B$ and $b$, on homologous chromosomes.

Crossing over would sometimes, but not always, delete one or more of the four alleles from both homologous chromosomes.

Directions: Answer the following question(s).

1

A scientist views a process that has occurred during meiosis, as shown in the diagram.
The scientist claims that genetic variation has occurred in the process. Is the scientist correct? Why or why not?

The scientist is incorrect. The process shown in the diagram is a deletion mutation, in which one nucleotide sequence joins another, causing genetic information to be maintained.

The scientist is incorrect. The process shown in the diagram is nondisjunction, in which a mutated chromosome does not duplicate normally, causing genetic information to be maintained.

The scientist is correct. The process shown in the diagram is nondisjunction, in which chromosomes fail to separate normally, causing an incorrect amount of genetic information to be inherited.

The scientist is correct. The process shown in the diagram is a deletion mutation, in which a nucleotide sequence has been omitted, causing an incorrect amount of genetic information to be inherited.

1

A man is exposed to a high amount of ultraviolet light. The light causes DNA in the cells of his eyes to suffer many mutations. His doctor claims that the mutations will not be passed to any future offspring. Which argument BEST describes the doctor's claim?

The claim is incorrect because point mutations occur in the sex cells and are heritable.

The claim is incorrect because germ-line mutations occur in the sex cells and are heritable.

The claim is correct because somatic mutations occur outside of the sex cells and are not heritable.

The claim is correct because DNA expression mutations occur outside of the sex cells and are not heritable.

1

Where does the replication of mutated genes occur in human cells?

nucleus

ribosome

cell membrane

endoplasmic reticulum

1

149 The diagram shows chromosomal crossover.
How does this crossing over of chromosomes affect the traits of offspring?

It causes more similarity in the traits of offspring.

It causes more variation in the traits of offspring.

It causes more mutations in the traits of offspring.

It causes more dominance in the traits of offspring.

Directions: Answer the following question(s).

1

Exposure to X-rays, ultraviolet rays, and radioactive substances may promote

change from sexual to asexual reproduction.

cancer among individual organisms.

the production of similar organisms.

an increase in population size.

1

Hairston Biology SB2a

How is sexual reproduction an advantage over asexual reproduction?

What are three sources of genetic variation?

The diagram shows a mutation that has occurred after recombination.
The mutation was inherited and passed along to the offspring by a chance occurrence. Which claim best describes what this type of mutation could cause?

One variety of sweet corn has kernels that turn red only when exposed to direct sunlight. The coloration of this variety shows what about gene expression?

The diagram shows the process of crossing over.
Which claim about crossing over in chromosomes is best supported by the diagram?

These homologous chromosomes carry different alleles of the A and B genes.
How would crossing over affect the distribution of the four alleles: $A$, $B$, $a$, and $b$?

A scientist views a process that has occurred during meiosis, as shown in the diagram.
The scientist claims that genetic variation has occurred in the process. Is the scientist correct? Why or why not?

A man is exposed to a high amount of ultraviolet light. The light causes DNA in the cells of his eyes to suffer many mutations. His doctor claims that the mutations will not be passed to any future offspring. Which argument BEST describes the doctor's claim?

Where does the replication of mutated genes occur in human cells?

149 The diagram shows chromosomal crossover.
How does this crossing over of chromosomes affect the traits of offspring?

Exposure to X-rays, ultraviolet rays, and radioactive substances may promote

How is sexual reproduction an advantage over asexual reproduction?

Sickle-cell disease is the result of which kind of mutation?

What are three sources of genetic variation?

If a species of organisms do not reproduce sexually, and there are no mutations, what claim can most likely be made about the population?

Which evolutionary mechanism increases inheritable variations?

The diagram shows a mutation that has occurred after recombination.
The mutation was inherited and passed along to the offspring by a chance occurrence. Which claim best describes what this type of mutation could cause?

Which event accounts for the probability that a particular allele will be packaged in a given gamete?

One variety of sweet corn has kernels that turn red only when exposed to direct sunlight. The coloration of this variety shows what about gene expression?

The diagram shows the process of crossing over.
Which claim about crossing over in chromosomes is best supported by the diagram?

These homologous chromosomes carry different alleles of the A and B genes.
How would crossing over affect the distribution of the four alleles: $A$, $B$, $a$, and $b$?

A scientist views a process that has occurred during meiosis, as shown in the diagram.
The scientist claims that genetic variation has occurred in the process. Is the scientist correct? Why or why not?

A man is exposed to a high amount of ultraviolet light. The light causes DNA in the cells of his eyes to suffer many mutations. His doctor claims that the mutations will not be passed to any future offspring. Which argument BEST describes the doctor's claim?

Where does the replication of mutated genes occur in human cells?

149 The diagram shows chromosomal crossover.
How does this crossing over of chromosomes affect the traits of offspring?

Exposure to X-rays, ultraviolet rays, and radioactive substances may promote

A diagram of a mutation is illustrated.
The type of mutation illustrated is called

Sickle-cell disease is the result of which kind of mutation?

If a species of organisms do not reproduce sexually, and there are no mutations, what claim can most likely be made about the population?

Which evolutionary mechanism increases inheritable variations?

Which event accounts for the probability that a particular allele will be packaged in a given gamete?

A diagram of a mutation is illustrated.
The type of mutation illustrated is called

Hairston Biology SB2a

Hairston Biology SB2a

How is sexual reproduction an advantage over asexual reproduction?

What are three sources of genetic variation?

The diagram shows a mutation that has occurred after recombination.The mutation was inherited and passed along to the offspring by a chance occurrence. Which claim best describes what this type of mutation could cause?

One variety of sweet corn has kernels that turn red only when exposed to direct sunlight. The coloration of this variety shows what about gene expression?

The diagram shows the process of crossing over.Which claim about crossing over in chromosomes is best supported by the diagram?

These homologous chromosomes carry different alleles of the A and B genes.How would crossing over affect the distribution of the four alleles: $A$, $B$, $a$, and $b$?

A scientist views a process that has occurred during meiosis, as shown in the diagram.The scientist claims that genetic variation has occurred in the process. Is the scientist correct? Why or why not?

A man is exposed to a high amount of ultraviolet light. The light causes DNA in the cells of his eyes to suffer many mutations. His doctor claims that the mutations will not be passed to any future offspring. Which argument BEST describes the doctor's claim?

Where does the replication of mutated genes occur in human cells?

149 The diagram shows chromosomal crossover.How does this crossing over of chromosomes affect the traits of offspring?

Exposure to X-rays, ultraviolet rays, and radioactive substances may promote

How is sexual reproduction an advantage over asexual reproduction?

Sickle-cell disease is the result of which kind of mutation?

What are three sources of genetic variation?

If a species of organisms do not reproduce sexually, and there are no mutations, what claim can most likely be made about the population?

Which evolutionary mechanism increases inheritable variations?

The diagram shows a mutation that has occurred after recombination.The mutation was inherited and passed along to the offspring by a chance occurrence. Which claim best describes what this type of mutation could cause?

Which event accounts for the probability that a particular allele will be packaged in a given gamete?

One variety of sweet corn has kernels that turn red only when exposed to direct sunlight. The coloration of this variety shows what about gene expression?

The diagram shows the process of crossing over.Which claim about crossing over in chromosomes is best supported by the diagram?

These homologous chromosomes carry different alleles of the A and B genes.How would crossing over affect the distribution of the four alleles: $A$, $B$, $a$, and $b$?

A scientist views a process that has occurred during meiosis, as shown in the diagram.The scientist claims that genetic variation has occurred in the process. Is the scientist correct? Why or why not?

A man is exposed to a high amount of ultraviolet light. The light causes DNA in the cells of his eyes to suffer many mutations. His doctor claims that the mutations will not be passed to any future offspring. Which argument BEST describes the doctor's claim?

Where does the replication of mutated genes occur in human cells?

149 The diagram shows chromosomal crossover.How does this crossing over of chromosomes affect the traits of offspring?

Exposure to X-rays, ultraviolet rays, and radioactive substances may promote

A diagram of a mutation is illustrated.The type of mutation illustrated is called

Sickle-cell disease is the result of which kind of mutation?

If a species of organisms do not reproduce sexually, and there are no mutations, what claim can most likely be made about the population?

Which evolutionary mechanism increases inheritable variations?

Which event accounts for the probability that a particular allele will be packaged in a given gamete?

A diagram of a mutation is illustrated.The type of mutation illustrated is called

The diagram shows a mutation that has occurred after recombination.
The mutation was inherited and passed along to the offspring by a chance occurrence. Which claim best describes what this type of mutation could cause?

The diagram shows the process of crossing over.
Which claim about crossing over in chromosomes is best supported by the diagram?

These homologous chromosomes carry different alleles of the A and B genes.
How would crossing over affect the distribution of the four alleles: $A$, $B$, $a$, and $b$?

A scientist views a process that has occurred during meiosis, as shown in the diagram.
The scientist claims that genetic variation has occurred in the process. Is the scientist correct? Why or why not?

149 The diagram shows chromosomal crossover.
How does this crossing over of chromosomes affect the traits of offspring?

The diagram shows a mutation that has occurred after recombination.
The mutation was inherited and passed along to the offspring by a chance occurrence. Which claim best describes what this type of mutation could cause?

The diagram shows the process of crossing over.
Which claim about crossing over in chromosomes is best supported by the diagram?

These homologous chromosomes carry different alleles of the A and B genes.
How would crossing over affect the distribution of the four alleles: $A$, $B$, $a$, and $b$?

A scientist views a process that has occurred during meiosis, as shown in the diagram.
The scientist claims that genetic variation has occurred in the process. Is the scientist correct? Why or why not?

149 The diagram shows chromosomal crossover.
How does this crossing over of chromosomes affect the traits of offspring?

A diagram of a mutation is illustrated.
The type of mutation illustrated is called

A diagram of a mutation is illustrated.
The type of mutation illustrated is called