Biology, asked by PRACHISHETTY5359, 1 year ago

The sister chromatids are held together by a) Centrioles b) Chromomere
c) Chromonemata
d) Centromere

Answers

Answered by pintusingh41122
4

Answer:

b) Centromere

Explanation:

Two sister chromatids are joined together by the centromere. The centromere is a position of a DNA where a pair of sister chromatids are linked together. only one centromere is found in a chromosome. The types of chromosomes are defined on the basis of their position of the centromere. Four types of the centromere are there:

1.  Metacentric

2. Sub-metacentric

3. Acrocentric

4. Telocentric

Answered by pr264428
3

The correct answer is d) Centromere.

Explanation:

  • The Centromere is found at the primary constriction of the chromosome.
  • It is the location at which the sister chromatids remain attached to each other.
  • The region has high deposition of a particular protein called the Cohesin.
  • The position of the centromere can vary along the length of the chromosome:
  1. Telocentric - Centromere at the end of the chromosome.
  2. Acrocentric - Centromere near the chromosome end.
  3. Sub-meta centric - Centromere near the middle region of the chromosome.
  4. Meta-centric - Centromere exactly at the middle of the chromosome.

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