DE Unit-7 Exam

Last updated about 2 months ago

21 questions

Required

1

Required

1

Required

1

Required

1

Required

4

Required

1

Required

2

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

2

Required

2

Required

1

Required

3

Required

3

Library

DE Unit-7 Exam

Last updated about 2 months ago

21 questions

Required

1

Required

1

Required

1

One of these events does not take place during meiosis-

Required

1

The meiotic division forms-

Required

1

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

Required

1

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?

Required

4

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

Required

1

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

Required

2

Required

1

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

Required

1

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

Required

1

Which of the following best describes Non disjunction?

Required

1

The risk of non disjunction increase with-

Required

1

One difference between Autosomes and sex chromosomes humans is-

Required

1

How does independent assortment affect genetic variation?

Required

2

Required

2

Required

1

Required

3

Rearrange the events in Meiosis-I in the correct order

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

Required

3

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

One of these events does not take place during meiosis-

The meiotic division forms-

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

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?

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
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

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

Match the image with the correct phase name-

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

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

Which of the following best describes Non disjunction?

The risk of non disjunction increase with-

One difference between Autosomes and sex chromosomes humans is-

How does independent assortment affect genetic variation?

What purpose does a karyotype serve in genetics?

Which statements correctly describe chromosomes during metaphase II? (Check all that apply)

If nondisjunction occurs during anaphase II of one daughter cell, which outcomes are possible in the resulting gametes? (Check all that apply)

What are the similarities between meiosis I and meiosis II?

Rearrange the events in Meiosis-I in the correct order

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

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
Gamete

Haploid
Diploid

Identify the phase in the image alongside.

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.