EOC Review: Meiosis II

Which most accurately describes the phenomenon when homologous chromosomes wrap around each other during Prophase I of meiosis?

• tangling

• crossing over

• chromatid wrapping

• independent assortment

An individual has three number 21 chromosomes. Which is most likely the cause?

• disjunction

• crossing over

• gene mutation

• nondisjunction

Which best describes crossing over?

• It occurs during mitosis and reduces the chances of genetic variation in organisms.

• It occurs during mitosis and increases the chances of genetic variation in organisms.

• It occurs during meiosis and reduces the chances of genetic variation in organisms.

• It occurs during meiosis and increases the chances of genetic variation in organisms.

Tags

NGSS.HS-LS3-2

Which is the most likely reason for an individual to be born with 45 autosomes and 2 sex chromosomes?

• crossing-over of one of the homologous chromosome pairs during the process of mitosis

• crossing-over of one of the homologous chromosome pairs during the process of meiosis

• nondisjunction of one of the homologous chromosome pairs during the process of mitosis

• nondisjunction of one of the homologous chromosome pairs during the process of meiosis

Which describes what happens to alleles that are found on separate chromosomes within an individual’s genome during meiosis?

• They separate independently.

• They become part of ATP in the offspring.

• They become the ribosomes in the offspring.

• They all end up in the same haploid gamete.

Which of the following statements BEST explains the role of meiosis in reproduction?

• Meiosis makes it possible for a zygote to have the correct number of chromosomes.

• Meiosis increases the chances of fertilization because it produces four daughter cells.

• Meiosis results in offspring with genotypes that are not exact copies of the parents.

• Meiosis allows chromosomes to exchange genetic material through crossing over.

Tags

NGSS.HS-LS3-2

In human beings, which factor determines the sex of an individual?

• number of chromosomes

• presence of the Y chromosome

• pairing with the X chromosome

• genes within the chromosomes

A section of a chromosome breaks off and reattaches to the original chromosome in the reverse direction. Which chromosomal mutation has most likely occurred?

• deletion

• insertion

• inversion

• translocation

How are the four cells produced in meiosis similar to the cells produced in mitosis?

• Cells produced by meiosis or mitosis can form a complete organism.

• Cells produced by meiosis or mitosis have the same amount of cytoplasm.

• Cells produced by meiosis or mitosis have the same size plasma membranes.

• Cells produced by meiosis or mitosis contain chromosomes from the parental cells.

Which process occurs in both mitosis and meiosis?

• crossing-over

• replication of DNA

• pairing of homologous chromosomes

• division of two cells into four haploid cells