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DE Unit-7 Exam

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Last updated about 2 months ago
21 questions
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Question 3
3.

One of these events does not take place during meiosis-

Question 4
4.

The meiotic division forms-

Question 5
5.

A cell undergoes Meiosis I with no crossing over between homologous chromosomes. Which outcome is most likely?

Question 6
6.

Name the event wherein the paternal and maternal chromosomes change their material or exchange the parts with each other in cell division. Which phase does it happen?

Question 7
7.

Drag and drop the description to the category that it belongs to.

  • Two daughter cells with haploid number of chromosomes is formed.
  • Followed by Cytokinesis
Question 8
8.

A student claims that crossing over is unnecessary because independent assortment alone creates genetic diversity. Which statement best evaluates this claim?

Question 9
9.

Question 10
10.

The number of chromosomes in muscle cells of a coyote are 78. What will be the number of chromosomes in its sperms.

Question 11
11.

Haploid gametes have ......# of chromosomes whereas Diploid cells have .....# of chromosomes

Question 12
12.

Which of the following best describes Non disjunction?

Question 13
13.

The risk of non disjunction increase with-

Question 14
14.

One difference between Autosomes and sex chromosomes humans is-

Question 15
15.

How does independent assortment affect genetic variation?

Question 16
16.

Question 17
17.

Question 18
18.

Question 19
19.

Question 20
20.

Rearrange the events in Meiosis-I in the correct order

  1. The nucleolus and the nuclear membrane reappears.
  2. Synapsis occurs.
  3. The two haploid daughter cells completely divides and is ready to go next.
  4. The recombinant chromosomes move apart.
  5. The Homologous pairs of chromosomes line up at the equator/middle.
  6. The homologous chromosomes exchange their parts.
Question 21
21.

Categorize the following description to correct category

  • Contains two set of chromosomes
  • Contains single set of chromosomes
  • Example is a Liver cell
  • Example is a sperm
  • Somatic cell
Question 1
1.

Identify the phase in the image alongside.

Question 2
2.

The reason for the choice of your answer in previous question is-

Synapsis-pairing up of homologous chromosome
Separation of sister chromatids that are recombinant.
Production of genetically different daughter cells.
Eukaryotic cells
Muscle cells
Reduced genetic variation among gametes
Failure of homologous chromosomes to separate
A lot of Independent assortment
Tetrad, Prophase-II
Crossing over, Prophase-I
Homologous chromosome, Prophase-I
Crossing over occurs here.
The sister chromatids of recombinant chromosomes move apart
Nucleolus and nuclear membrane disappear.
Four daughter cells with haploid number of chromosomes is formed.
Centrioles move towards the poles.
Homologous chromosomes align at the equator.
Meiosis-I
Meiosis-II
Both Meiosis-I and Meiosis-II
The claim is correct because crossing over only occurs in mitosis
The claim is incorrect because independent assortment does not occur in meiosis
The claim is incorrect because homologous chromosomes does not show synapsis before crossing over
Match the image with the correct phase name-
Anaphase-I
Anaphase-II
Metaphase-I
Crossing Over
12
78
2 sets (2n), Half (n)
4 sets (6n), 2 sets (3n)
Extra chromosomes are removed.
Inability of chromosomes to separate properly.
Sister chromatids spending more time in Telophase-I
Eating healthier food
Autosomes are found in males and Sex chromosomes are in females
Autosomes are-10 pairs and rest 13 are Sex chromosome
Autosomes and sex chromosomes are same there is no difference
Makes gametes identical to each other
Reduces genetic diversity in populations.
What purpose does a karyotype serve in genetics?
Study of chromosomal arrangement/numbers
Identifying the gender
Chromosomal abnormalities
Predicting phenotype
Identification of disorders
Determining the crossing over
Determining blood type
Which statements correctly describe chromosomes during metaphase II? (Check all that apply)
Chromosomes align in the middle of the cell on the spindle fibres
Centromeres divide at this stage
Homologous chromosomes align as tetrads at the metaphase plate
Chromosomes align independently of their homologs
Each chromosome consists of two sister chromatids joined at the centromere
Sister chromatids may be genetically non-identical
If nondisjunction occurs during anaphase II of one daughter cell, which outcomes are possible in the resulting gametes? (Check all that apply)
Two normal haploid gametes
All gametes affected equally
Synapsis could be one of the results
Down's syndrome could be one of the examples
Gametes with identical chromosome numbers but different alleles
One gamete with an extra chromosome
One gamete missing a chromosome
What are the similarities between meiosis I and meiosis II?
Haploid cells are formed.
Sister chromatids separate.
Nucleolus and nuclear membrane disappear
The chromosomes line up along the equator/middle
Crossing over happens.
Synapsis happens
Gamete
Haploid
Diploid
Anaphase-II
Metaphase-I
Sister chromatids are aligned at the equator.
Homologous chromosomes are separating.
Homologous chromosomes are crossing over.