1) During the production of gametes, sister chromatids are separated as the individual chromosomes move to opposite ends of the cell. The nuclear membrane is now forming around each haploid set of chromosomes. Which of the following is the best conclusion you can make about the life cycle of this cell?
A) The cell will rejoin the chromatids, and interphase II will begin.
B) The cell is in interphase II and will enter prophase II next.
C) The cell is in telophase II, and cytokinesis will occur next.
D) The cell will undergo DNA replication in order to become diploid again.

2) Which of the following correctly names and explains the significance of the phase of meiosis depicted below?
An image depicting a stage of meiosis. Homologous sets of four chromatids along the center of the cell. Spindle fibers from opposite poles have attached to each set of sister chromatids as well as the homologous sets.

A) Anaphase I: separation of sister chromatids must occur to increase genetic diversity
B) Telophase II: each pole must form a haploid pair of chromosomes to begin DNA replication
C) Interphase II: a daughter cell must prepare for a second phase of chromosome replication
D) Metaphase I: spindle fiber attachment must occur for cell division to occur

3) Which of the following best compares the results of mitosis and meiosis?
A) Mitosis results in four diploid cells, while meiosis results in two haploid cells.
B) Mitosis results in four haploid cells, while meiosis results in two diploid cells.
C) Mitosis results in two diploid cells, while meiosis results in four haploid cells.
D) Mitosis results in two haploid cells, while meiosis results in four diploid cells.

4) Some fungi are able to reproduce both sexually and asexually. Which of the following describes a consequence that would most likely occur if fungi undergo only sexual reproduction for a long period of time?
A) The species would eventually become unable to reproduce asexually, but diversity would increase.
B) There would be gradual reduction in genetic diversity, but the overall population would rise.
C) The frequency of genetic mutations would increase, but reproduction rates would lower.
D) The species' life span would begin to decrease, but reproduction rates would stay constant.

5) Two brown-eyed parents have produced three blue-eyed sons. If they have another child, how likely is it that the child will be brown-eyed?
A) Since all of their children are blue-eyed, there is a 100 percent chance the next will be blue-eyed.
B) Since blue eyes are dominant in this family, there is a 25 percent chance the next will be brown-eyed.
C) After having three blue-eyed children, there is a 100 percent chance of having a brown-eyed child.
D) Both parents have a recessive allele for blue eyes, so it is a 75 percent chance the next will be brown-eyed.

6) In humans, having a widow's peak is the result of a dominant gene, and having a normal hairline is a recessive trait. A man who has a widow's peak is homozygous for the trait and has a child with a woman who has a normal hairline. Which of the following best describes the most likely appearance of their child's hairline?
A) Their child would have a normal hairline.
B) Their child would have a widow's peak if the mother is a carrier for the trait.
C) Their child would have a normal hairline if the father passes on the recessive allele.
D) Their child would have a widow's peak.

7) Hemophilia is a blood clotting disorder that is a sex-linked trait carried on the X chromosome. If a woman with hemophilia and a man without the disorder have two sons and two daughters, how many of their children would have hemophilia?
A) None
B) One
C) Two
D) Four

8) Observable traits exhibited by an organism do not always indicate the exact genetic makeup of that organism. Which best explains this?
A) incomplete dominance
B) polygenic traits
C) multiple alleles
D) recessive alleles

9) A woman gives birth to a son who has type AB blood. She has type B blood. Which of the following can be concluded from this about her parents' blood types?
A) One of her parents had at least one B allele.
B) One of her parents had type AB blood.
C) One of her parents had type B blood and the other type A blood.
D) One of her parents had at least one A allele and the other at least one B allele.

10) Which of the following ways are DNA and mRNA similar?
A) They are both always kept in the nucleus to keep them safe from damage.
B) They are both double stranded and must be unzipped during replication and transcription.
C) They both contain the entire genetic sequence of the original DNA from their parent cell.
D) They both copy genetic code by forming a complementary sequence of nucleotides with an existing strand of DNA.

Question

shoshomory5 shoshomory5

31-12-2022
Biology

Answered

1) During the production of gametes, sister chromatids are separated as the individual chromosomes move to opposite ends of the cell. The nuclear membrane is now forming around each haploid set of chromosomes. Which of the following is the best conclusion you can make about the life cycle of this cell?
A) The cell will rejoin the chromatids, and interphase II will begin.
B) The cell is in interphase II and will enter prophase II next.
C) The cell is in telophase II, and cytokinesis will occur next.
D) The cell will undergo DNA replication in order to become diploid again.

2) Which of the following correctly names and explains the significance of the phase of meiosis depicted below?
An image depicting a stage of meiosis. Homologous sets of four chromatids along the center of the cell. Spindle fibers from opposite poles have attached to each set of sister chromatids as well as the homologous sets.

A) Anaphase I: separation of sister chromatids must occur to increase genetic diversity
B) Telophase II: each pole must form a haploid pair of chromosomes to begin DNA replication
C) Interphase II: a daughter cell must prepare for a second phase of chromosome replication
D) Metaphase I: spindle fiber attachment must occur for cell division to occur

3) Which of the following best compares the results of mitosis and meiosis?
A) Mitosis results in four diploid cells, while meiosis results in two haploid cells.
B) Mitosis results in four haploid cells, while meiosis results in two diploid cells.
C) Mitosis results in two diploid cells, while meiosis results in four haploid cells.
D) Mitosis results in two haploid cells, while meiosis results in four diploid cells.

4) Some fungi are able to reproduce both sexually and asexually. Which of the following describes a consequence that would most likely occur if fungi undergo only sexual reproduction for a long period of time?
A) The species would eventually become unable to reproduce asexually, but diversity would increase.
B) There would be gradual reduction in genetic diversity, but the overall population would rise.
C) The frequency of genetic mutations would increase, but reproduction rates would lower.
D) The species' life span would begin to decrease, but reproduction rates would stay constant.

5) Two brown-eyed parents have produced three blue-eyed sons. If they have another child, how likely is it that the child will be brown-eyed?
A) Since all of their children are blue-eyed, there is a 100 percent chance the next will be blue-eyed.
B) Since blue eyes are dominant in this family, there is a 25 percent chance the next will be brown-eyed.
C) After having three blue-eyed children, there is a 100 percent chance of having a brown-eyed child.
D) Both parents have a recessive allele for blue eyes, so it is a 75 percent chance the next will be brown-eyed.

6) In humans, having a widow's peak is the result of a dominant gene, and having a normal hairline is a recessive trait. A man who has a widow's peak is homozygous for the trait and has a child with a woman who has a normal hairline. Which of the following best describes the most likely appearance of their child's hairline?
A) Their child would have a normal hairline.
B) Their child would have a widow's peak if the mother is a carrier for the trait.
C) Their child would have a normal hairline if the father passes on the recessive allele.
D) Their child would have a widow's peak.

7) Hemophilia is a blood clotting disorder that is a sex-linked trait carried on the X chromosome. If a woman with hemophilia and a man without the disorder have two sons and two daughters, how many of their children would have hemophilia?
A) None
B) One
C) Two
D) Four

8) Observable traits exhibited by an organism do not always indicate the exact genetic makeup of that organism. Which best explains this?
A) incomplete dominance
B) polygenic traits
C) multiple alleles
D) recessive alleles

9) A woman gives birth to a son who has type AB blood. She has type B blood. Which of the following can be concluded from this about her parents' blood types?
A) One of her parents had at least one B allele.
B) One of her parents had type AB blood.
C) One of her parents had type B blood and the other type A blood.
D) One of her parents had at least one A allele and the other at least one B allele.

10) Which of the following ways are DNA and mRNA similar?
A) They are both always kept in the nucleus to keep them safe from damage.
B) They are both double stranded and must be unzipped during replication and transcription.
C) They both contain the entire genetic sequence of the original DNA from their parent cell.
D) They both copy genetic code by forming a complementary sequence of nucleotides with an existing strand of DNA.

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