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प्रश्न
Multiple Choice Question:
How many chromosomes are found in a cell of humans?
पर्याय
20 Pairs
46 Pairs
23 Pairs
46 Pairs
उत्तर
46 Pairs
APPEARS IN
संबंधित प्रश्न
Match the events given in column A with the phase in mitotic cell division in column B.
| Column ‘A’ | Column ‘B’ | ||
| 1. | Chromosomes get arranged in a horizontal plane at the equator. |
a. | Anaphase |
| 2. | Daughter chromosomes move to the opposite poles of a spindle |
b. | Prophase |
| 3. | Chromosomes become visible as fine, long threads. |
c. | Telophase |
| 4. | Chromosomes lose their distinctiveness and gradually become transformed into a chromatin network. |
d. | Metaphase |
Choose the correct answer:
Centromere is related to _______________
Choose the correct answer:
Minimum coiling in chromosome is at ________________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________
Mention the contribution of the scientist given below in the study of chromosome:
Sutton and Boveri
Write a sentence of the following:
Telomere
Choose the correct answer:
Thick short chromosomes can be observed at (in mitosis) ___________
Choose the correct answer:
Sex of an individual is determined by ____________
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in ______.
State how does meiosis maintains chromosome number in a species.
Identify the stages of meiosven below and label them.
Complete the following sentence with appropriate word :
The spindle fibers are made of _______.
Complete the following sentence with appropriate word :
Chromosomes are _________ material.
Write the functional activity of the following structure:
Spindle fibers
Multiple Choice Question
Chromosomal aberrations are caused by:
The centromere is found at the centre of the ______ chromosome.
The number of chromosomes found in human beings is ______.
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?
