Meiosis

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

• the # of chromosomes

• the number of gamete cells

• the presence of the Y chromosomes

• the presence of the X chromosomes

Which process initiates the passage of half of a parent's DNA to offspring?

• differentiation

• mitosis

• fertilization

• meiosis

Tags

NGSS.HS-LS3-2

If a fruit fly contains 8 chromosomes. How many chromosomes are in the gametes that fruit fly if it produces sexually.

• 8

• 6

• 4

• 2

Why is approximately 50% of any individual's DNA inherited from that individual's father?

• Half of the individual's nuclei descend from the nucleus of the father's gamete.

• Half of the individual's cells descend from the father's gamete.

• It was passed to the individual by somatic cell from the father.

• It was passed to the individual by a gamete from the father.

Tags

NGSS.HS-LS3-1

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

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

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

• 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

What does 2n stand for

• 23 chromosomes

• Diploid cells

• Haploid cells

• 46 chromosomes

Meiosis is necessary for which reproductive event to occur?

• vegetative budding

• binary fission

• cloning

• fertilization

Tags

NGSS.HS-LS3-2

Nondisjunction during meiosis results in an abnormal number of chromosomes in one or more gametes. In some cases of nondisjunction, a single chromosome fails to separate. In others, none of the chromosomes separate. Suppose an egg is produced in which none of the chromosomes separate during meiosis II. What is the chromosomes number of the zygote that results if this egg is fertilized by a normal sperm?

• 1n

• 2n

• 2n+1

• 3n

Tags

NGSS.HS-LS3-2

Plants can reproduce sexually and asexually. If one offspring is produced sexually while the other is produced asexually, what will only the sexually produced offspring have?

• beneficial genetic traits

• a complete set of traits

• both inherited and acquired traits

• a new combination of traits

Tags

NGSS.MS-LS3-2

Mutations that occur in sex cells can be passed from parent to offspring during.

• cloning

• budding

• binary fission

• sexual reproduction

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1