17 Questions
What is the function of a centromere?
To attach chromosomes with spindle fibres during cell division and to detach sister chromatids during anaphase.
What happens to chromatids after cell division is complete?
Chromatids decondense and revert to chromatin fibres.
What is a chromatid?
One vertical half of a duplicated chromosome.
What are sister chromatids?
Two identical chromatids joined by a centromere.
What are genes?
Specific sequences of nucleotides on a chromosome that encode proteins.
What biological evidence can be obtained from blood, semen stains, hair, or clothing found at a crime scene?
DNA fingerprinting
What is the main function of chromatin fiber in a cell?
Made up of DNA and Histones
What is the function of genes?
To encode proteins that determine specific features of an organism.
What is the main purpose of cell division in organisms?
Growth, replacement, repair, and reproduction
What happens to chromosomes during cell division for growth, replacement, and repair?
They duplicate and distribute equally
Where are the two sister chromatids of a chromosome attached to each other?
Centromere
Who first discovered the structure of DNA?
Rosalind Franklin
What are the three components of a nucleotide?
Sugar, Phosphate, and Nitrogenous Bases
What is the process through which repair of injuries is done in the body?
Cell division
Which cells in the bone marrow divide to replace old cells?
Parent cells
How are accidental injuries like cuts in the skin or fractures in the bone repaired?
Covering up gaps and joining broken ends
Where does mitosis occur in the body?
In all body cells except oocytes and spermatocytes
Test your knowledge on cell division and the transformation of chromatids into chromosomes. Understand the process of decondensation and the formation of chromatin fibres within the nucleus. Learn about chromatids, sister chromatids, and their separation during anaphase.
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