Chromosome Classification Based on the Position of Centromere
Trending Questions
Q. Identify the correct match between the type of chromosomes and the position of the centromere.
ChromosomesPosition of centromere(A) Metacentric(1) At the tip(B) Telocentric(2) Almost near the tip(C) Acrocentric(3) At the middle(D) Submetacentric(4) Slightly away from the middle
ChromosomesPosition of centromere(A) Metacentric(1) At the tip(B) Telocentric(2) Almost near the tip(C) Acrocentric(3) At the middle(D) Submetacentric(4) Slightly away from the middle
- (A)-(2), (B)-(4), (C)-(3), (D)-(1)
- (A)-(3), (B)-(1), (C)-(2), (D)-(4)
- (A)-(3), (B)-(2), (C)-(1), (D)-(4)
- (A)-(1), (B)-(2), (C)-(3), (D)-(4)
Q.
What is the c paradox?
Q.
Name a membrane that disappears late prophase.
Q.
Question 20
What is the feature of a metacentric chromosome?
Q. In metacentric chromosomes:
- Centromere is located at one end so that there is only one arm.
- Centromere is non-centrally located so that one arm is longer than the other.
- Centromere is centrally located so that the two arms are of equal length.
- Centromere is found at the end so that one arm is very short and the other is long.
Q. Chromosomes present in the prolonged prophase in the salivary glands of Drosophila are:
- B-Chromosomes
- Lampbrush chromosome
- Supernumerary chromosomes
- Polytene chromosome
Q. Identify the correct match between the type of chromosomes and the position of the centromere.
ChromosomesPosition of centromere(A) Metacentric(1) At the tip(B) Telocentric(2) Almost near the tip(C) Acrocentric(3) At the middle(D) Submetacentric(4) Slightly away from the middle
ChromosomesPosition of centromere(A) Metacentric(1) At the tip(B) Telocentric(2) Almost near the tip(C) Acrocentric(3) At the middle(D) Submetacentric(4) Slightly away from the middle
- (A)-(1), (B)-(2), (C)-(3), (D)-(4)
- (A)-(2), (B)-(4), (C)-(3), (D)-(1)
- (A)-(3), (B)-(1), (C)-(2), (D)-(4)
- (A)-(3), (B)-(2), (C)-(1), (D)-(4)
Q. Identify the kinetochore in the given diagram.
Q. Spindle fibres are attached to chromosomes in the region of
- Kinetochore
- Chromonema
- Chromosome
- Centrosome
Q. Match the following chromosomes based on the position of their centromeres.
- Middle
- Terminal
- Close to middle
- Close to end
Q. What is centromere? How does the position of centrome form the basis of classification of chromosomes. Support your answer by showing the position of centromere on different types of chromosomes.
Q. Which type of chromosome will appear 'L' -shaped during anaphase?
- Telocentric
- Acrocentric
- Metacentric
- Submetacentric
Q.
The chromosome in which centromere lies slightly away from the middle of the chromosome resulting into one shorter arm and one longer arm, is called as
- Metacentric
- Submetacentric
- Acrocentric
- Telocentric
Q. Which one possesses giant chromosomes?
- Drosophila
- Xenopsylla
- Branchiomyces
- Mouse
Q. Read the assertion and reason carefully to mark the correct option in question.
Assertion: Sub-metacentric chromosome has one shorter and one longer arm.
Reason: Metacentric chromosome has one very long and one very short arm.
Assertion: Sub-metacentric chromosome has one shorter and one longer arm.
Reason: Metacentric chromosome has one very long and one very short arm.
Q. A telocentric chromosome of metaphase consists of:
- One centromere, one arm, and two chromatids
- One centromere, two arms, and two chromatids
- One centromere, one arm, and one chromatid
- One centromere, two arms, and one chromatid
Q. A chromosome with centromere in the middle is
- Telocentric
- Acrocentric
- Metacentric
- Dicentric
Q. Assertion :The acrocentric chromosome has centromere at the terminal position Reason: The metacentric chromosome has centromere slightly away from the middle of the chromosome
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect
Q. A chromosome with centromere near the middle is called
- Submetacentric
- Metacentric
- Acrocentric
- Telocentric
Q. Chromosomes present in prolonged prophase in the salivary glands of Drosophila are
- Polytene chromosomes
- Lampbrush chromosomes
- Supernumerary chromosomes
- B-chromosomes
Q. A chromosome with sub-terminal centromere is
- Acentric
- Telocentric
- Acrocentric
- Metacentric
Q. Human chromosomes have been grouped on the basis of size and centromere into ____ types
- 10
- 5
- 6
- 7
Q. Identify the type of chromosomes shown in A, B, C, D based on the position of centromere.
Q.
A chromosome, in which the centromere is situated close to its end so that one arm is very short and the other very long is:
- Metacentric
- Submetacentric
- Telocentric
- Acrocentric
Q. Polytene chromosomes were discovered in
- Chironomus
- Drosophila
- Musca
- Culex
Q.
(i) Centromere is present in the middle of the chromosome and forms two equal arms.
(ii) Chromosome has a terminal centromere.
(iii) Centromere lies close to the end of the chromosomes forming one extremely short and one very long arm.
(iv) Centromere lies slightly away from the middle of the longer arm.
Read the given statements.
(i) Centromere is present in the middle of the chromosome and forms two equal arms.
(ii) Chromosome has a terminal centromere.
(iii) Centromere lies close to the end of the chromosomes forming one extremely short and one very long arm.
(iv) Centromere lies slightly away from the middle of the longer arm.
Select the correct option as per the codes given above.
- Metacentric−(i), Submetacentric−(iv), Acrocentric−(iii), Telocentric−(ii)
- Metacentric−(iv), Submetacentric−(i), Acrocentric−(iii), Telocentric−(ii)
- Metacentric−(i), Submetacentric−(ii), Acrocentric−(iii), Telocentric−(iv)
- Metacentric−(iv), Submetacentric−(ii), Acrocentric−(iii), Telocentric−(i)
Q. Classify chromosomes based on the position of centromere.
Q. Nucleus contains thread-like structures called _______.
Q. Name the types of chromosomes based on the position of centromere and draw suitable diagram for each.
Q. Chromosomes appearing rod shaped during anaphase are
- Submetacentric
- Acrocentric
- Telocentric
- Metacentric
