Final Exam: Meiosis

Meiosis results in a change in chromosome number indicated by... A) 2n to n B) 2n to 2n C) n to 2n D) n to n

A) 2n to n

Which of the following statements is false? A) Gametes are made by mitosis B) Gametes are haploid cells C) A typical body cell is called a somatic cell D) Somatic cells are diploid E) A zygote is a fertilized egg

A) Gametes are made by mitosis

This occurs when a cell divides to form two nuclei that are genetically identical A) The statement is true for mitosis only B) The statement is true for meiosis I only C) The statement is true for meiosis II only D) The statement is true for mitosis and meiosis I E) The statement is true for mitosis and meiosis II

A) The statement is true for mitosis only

Which of the following happens at the conclusion of meiosis I? A) The sperm cells elongate to form a head and a tail end B) The chromosome number per cell is conserved C) Homologous chromosomes are separated D) Four daughter cells are formed E) Sister chromatids are separated

C) Homologous chromosomes are separated

Which of the following is true of a species that has a chromosome number of 2n=16? A) A gamete from this species has 4 chromosomes B) During the S phase of the cell cycle there will be 32 separate chromosomes C) The species has 16 sets of chromosomes per cell D) Each cell has 8 homologous pairs E) The species is diploid with 32 chromosomes per cell

D) Each cell has 8 homologous pairs

Which of the following options correctly describes the behavior of a tetrad during anaphase I of meiosis? A) It splits into four chromosomes, which distribute in sister-chromosome pairs to the two poles of the dividing cell B) It goes intact to one pole of the dividing cell C) It splits into two pairs of homologous, non-sister chromatids, and one pair goes to each pole of the dividing cell D) It splits into two pairs of sister chromatids, and one pair goes to each pole of the dividing cell E) It splits into four chromosomes, which distribute in random pairs to the two poles of the dividing cell

D) It splits into two pairs of sister chromatids, and one pair goes to each pole of the dividing cell

T/F: Replication of DNA occurs before meiosis I and meiosis II.

False

If the liver cells of an animal have 24 chromosomes, its sperm cells would have how many chromosomes? A) 6 B) 48 C) 12 D) 24

C) 12

T/F: The overall events of prophase, metaphase, anaphase, and telophase are the same in both mitosis and meiosis.

True

After telophase I of meiosis, the chromosomal makeup of each daughter cell is... A) haploid, and the chromosomes are each composed of two chromatids B) diploid, and the chromosomes are each composed of a single chromatid C) diploid, and the chromosomes are each composed of two chromatids D) haploid, and the chromosomes are each composed of a single chromatid E) tetraploid, and the chromosomes are each composed of two chromotids

A) haploid, and the chromosomes are each composed of two chromatids

Two chromosomes in a nucleus that carry information for the same traits in the same positions on the chromosome but specify different versions of some traits constitute a pair of... A) homologous chromosomes B) polyploid chromosomes C) complementary chromosomes D) heterologous chromosomes E) parallel chromosomes

A) homologous chromosomes

A basic difference between sperm and egg cell production is that in egg cell production... A) only one functional cell is produced B) four functional eggs are produces C) sperm cell are haploid and eggs are diploid D) sperm form by mitosis and eggs by meiosis

A) only one functional cell is produced

The formation of sperm cells is termed: A) spermatogenesis B) oogenesis C) meiosis D) homologous formation

A) spermatogenesis

Independent assortment of chromosomes occurs. A) The statement is true for mitosis only B) The statement is true for meiosis I only C) The statement is true for mitosis and meiosis II D) The statement is true for meiosis II only E) The statement is true for mitosis and meiosis I

B) The statement is true for meiosis I only

Chromatids are separated from each other. A) The statement is true for meiosis I only B) The statement is true for mitosis and meiosis II C) The statement is true for meiosis II only D) The statement is true for mitosis and meiosis I E) The statement is true for mitosis only

B) The statement is true for mitosis and meiosis II

Tetrads of chromosomes are aligned at the equator of the spindle; alignment determines independent assortment in this phase... A) prophase I B) metaphase I C) telophase I D) anaphase II E) telophase II

B) metaphase I

The process is preceded by a copying (replication) of the DNA A) The statement is true for mitosis only B) The statement is true for meiosis I only C) The statement is true for meiosis II only D) The statement is true for mitosis and meiosis I E) The statement is true for mitosis and meiosis II

D) The statement is true for mitosis and meiosis I

Crossing-over occurs during which phase of meiosis? A) anaphase I B) prophase II C) telophase I D) prophase I E) metaphase II

D) prophase I

During which stage of meiosis does synapsis and the formation of tetrads occur? A) metaphase I B) interphase I C) prophase II D) prophase I E) interphase II

D) prophase I

Which of the following is true of the process of meiosis? A) Four autosomes result B) Four diploid cells result C) Two diploid cells result D) Four chiasmata result E) Four haploid cells result

E) Four haploid cells result

Which of the following occurs in meiosis but not in mitosis? A) Chromosome replication B) Condensation of chromosomes C) Production of daughter cells D) Alignment of chromosomes at the equator E) Synapsis of chromosomes

E) Synapsis of chromosomes

Centromeres of sister chromatids disjoin and chromatids separate in this phase... A) metaphase I B) anaphase I C) telophase I D) prophase II E) anaphase II

E) anaphase II

In animals, somatic cells result from mitosis and _________ result from meiosis. A) zygotes B) diploid cells C) spores D) clones E) gametes

E) gametes

Both mitosis and meiosis are preceded by... A) prophase B) prometaphase C) telophase D) anaphase E) interphase

E) interphase