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प्रश्न
What are chromosomes?
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उत्तर
Chromosomes are highly condensed coiled chromatic fibres made of DNA which carries the hereditary material of the organisms.
संबंधित प्रश्न
Name the sex chromosomes in human males and females
Give an appropriate biological or technical term for the following:
The condition in which a pair of chromosomes carry similar alleles of a particular character.
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
Choose the correct answer:
In an interphase cell chromosome are as _____________
Choose the correct answer:
Minimum coiling in chromosome is at ______________
Choose the correct answer:
Minimum coiling in chromosome is at ________________
Write a sentence of the following:
Sheath
How does colchicine act as mitotic poison? Is there any advantage of it?
Give Reasons for the following
The meiosis is called reductional division
Give Reasons for the following
Chromosomes are the carriers of heredity.
Name the following:
Microtubules form the bipolar spindle in which stage.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Chromosomes are the thickest and shortest in telophase.
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Duplicated chromosomes are joined at a point termed ______.
Name the following:
The number of chromosomes present in human gametes.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Long answer type question.
Describe the different types of chromosomes.
Identify the TRUE statements with respect to aneuploidy.
- When the chromosome number is not the exact multiple of the haploid set, it is described as aneuploidy.
- Aneuploidy is only addition of one or more chromosome(s) to the total number of chromosomes in a cell.
- Aneuploidy is further classified as hypoploidy and hyperploidy.
Define the following term:
Chromatid
Which of the following statements are correct?
- X chromosome has large amount of euchromatin.
- heterochromatin is genetically inert.
- Both X and Y chromosomes are homologous.
- Crossing over does not take place in sex chromosomes in female.
Choose the correct option.
