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प्रश्न
Complete the following sentence with appropriate word :
The spindle fibers are made of _______.
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उत्तर
The spindle fibers are made of Microtubules.
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संबंधित प्रश्न
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
Chromosomes are mainly made up of ______.
Choose the correct answer:
Centromere is related to ________
Choose the correct answer:
Chromosomes number is halved in _____________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________
Write a sentence of the following:
Sheath
Choose the correct answer:
Thick short chromosomes can be observed at (in mitosis) ___________
Synthesis phase in the cell cycle is called so for the synthesis of more of
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
State how does meiosis maintains chromosome number in a species.
Give Technical Terms
The stage at which chromosomes occurs reach the opposite poles.
Name the following:
Pairs of chromosomes, present in human egg cells.
Name the following:
A specific part of a chromosome that determine hereditary characteristics.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| Genetics | Chromosomes are similar in size and shape. |
| Autosomes | The alternative forms of a gene. |
| Recessive gene | Study of laws of inheritance of characters |
| Allele | A gene that can express only when in a similar pair. |
| Homologous chromosomes | Chromosomes are other than the pair of sex chromosomes. |
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?
A male gorilla has 48 chromosomes in each of its body cells. How many chromosomes will each of the sperms have?
Define the following term:
Chromosome
Rewrite the correct form of the statement by changing the first or last word only:
Duplicated chromosomes remain attached at a point termed as centrosome.
