Unit 6 Target 1: Meiosis

19 Questions | By Jdowdyrobinson | Updated: Mar 21, 2022 | Attempts: 956

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1.

During metaphase I of meiosis, which of the following occurs?
- A.
  
  Centromeres of replicated chromosomes line up along the cells equator.
- B.
  
  Sister chromatids separate and move toward opposite poles of the cell.
- C.
  
  Paired homologous chromosomes line up along the cells equator.
- D.
  
  Homologous chromosomes separate and move toward opposite poles.
2.

Nondisjuction can occur during which of the following phases?
- A.
  
  Metaphase I only
- B.
  
  Anaphase I only
- C.
  
  Metaphase I and II only
- D.
  
  Anaphase I and II only
3.

A trisomy of chromosome 21 causes what condition?
- A.
  
  Albinism
- B.
  
  Dwarfism
- C.
  
  Down syndrome
- D.
  
  Color blindness
4.

Which one of the following is the cell process that allows parents to contribute genes to their offspring?
- A.
  
  Mitosis
- B.
  
  Meiosis
- C.
  
  Protein synthesis
- D.
  
  Diffusion
5.

Which of the following is NOT true about how meiosis reduces the number of chromosomes?
- A.
  
  There are 2 divisions.
- B.
  
  Homologous chromosomes pair up during Prophase I.
- C.
  
  Anaphase I separates homologous chromosomes & Anaphase II separates sister chromatids.
- D.
  
  Interphase (DNA replication) occurs twice.
6.

Meiosis results in the formation of
- A.
  
  Haploid body cells.
- B.
  
  Haploid sex cells.
- C.
  
  Diploid body cells.
- D.
  
  Diploid sex cells.
7.

If an organism's diploid number is 12, its haploid number is
- A.
  
  12.
- B.
  
  24.
- C.
  
  3.
- D.
  
  6.
8.

Gametes have what number of chromosomes relative to the parent cell?
- A.
  
  Two times.
- B.
  
  One-quarter
- C.
  
  The same
- D.
  
  One half
9.

Which one of the following is TRUE about the production of gametes?
- A.
  
  Spermatogenesis results in 1 viable sperm cell and 3 polar bodies.
- B.
  
  Male animals undergo oogenesis before birth.
- C.
  
  Oogenesis results in 1 viable egg cell and 3 polar bodies.
- D.
  
  All of the above are true
10.

Meiosis results in the formation of
- A.
  
  Two geneticall different cells.
- B.
  
  Two genetically identical cells.
- C.
  
  Four genetically different cells.
- D.
  
  Four genetically identical cells.
11.

Gametes are produced by the process of
- A.
  
  Mitosis.
- B.
  
  Replication.
- C.
  
  Meiosis.
- D.
  
  Crossing-over
12.

Gametes have
- A.
  
  Homologous chromosomes.
- B.
  
  Two sets of chromosomes.
- C.
  
  One allele for each gene.
- D.
  
  Two the number of chromosomes.
13.

Why does crossing over occur during Meiosis but NOT during Mitosis?
- A.
  
  Chromatids are not involved in mitosis.
- B.
  
  Homologous chromosomes do not pair up during mitosis.
- C.
  
  A cell undergoing mitosis does not have homologous chromosomes.
- D.
  
  There is no prophase during mitosis.
14.

A female gamete produced during meiosis is called _______.
- A.
  
  Sperm
- B.
  
  Spermatogonium
- C.
  
  Oogonium
- D.
  
  Ovum
15.

How many chromosomes are found in human gametes?
- A.
  
  12
- B.
  
  23
- C.
  
  92
- D.
  
  46
16.

During cytokinesis in the female, what divides unequally?
- A.
  
  The sperm cell
- B.
  
  The ovary
- C.
  
  The cytoplasm
- D.
  
  The DNA
17.

What is shown in the diagram?
- A.
  
  Anaphase I
- B.
  
  Gametes
- C.
  
  Crossing-over
- D.
  
  Replication
18.

When does the process in the diagram happen?
- A.
  
  Metaphase II
- B.
  
  Prophase II
- C.
  
  Prophase I
- D.
  
  Metaphase I
19.

Refer to the illustration, The process shown is
- A.
  
  Mitosis.
- B.
  
  Chromosomal mutation.
- C.
  
  Meiosis.
- D.
  
  Dominance.