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प्रश्न
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उत्तर
Chromosomes are the thread like structures present in the nucleus of the cell. They are covered with a sheath made up of proteins and filled with granular matter called matrix. Inside the matrix, there are two threads called chromonemata.
The chromosome consists of two symmetrical strands called chromatids. Each chromosome consists of a distinct constriction called centromere which gets attached to the spindle network.
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संबंधित प्रश्न
The term “chromosomes” literally means ______.
What is the difference between chromatin fibre and chromosome?
Choose the best option out of the four alternatives a, b, c and d
Question 1:
The number of chromosomes in a certain type of cell division is halved. This kind of cell
division occurs in.
(a) Only testis
(b) Only ovary
(c) Both ovary and testis
(d) All body cells
Choose the correct answer:
In an interphase cell chromosome are as _____________
Choose the correct answer:
During mitosis which of the following disintegrate ___________
Choose the correct answer:
Chromosomes number is halved in ____________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________
Choose the correct answer:
Telocentric chromosomes are _________________
What is allosome?
With the help of a neat labelled diagram, describe the structure of chromosome.
Define euploidy.
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
The sex of the newborn child is a matter of chance and neither of the parents may be considered responsible for it. What would be the possible fusion of gametes to determine the sex of the child?
The chromosomes are duplicated in ______.
The female gamete/egg cell of a human cell will have ______.
The two non-sister chromatids of a paired chromosome are attached to each other at ______ during the process of crossing over.
Given below is a set of four term. Choose the odd one and write the category of the remaining term:
In the human male, a sperm contains autosomes and ______.
