Advertisements
Advertisements
प्रश्न
Choose the correct answer:
A 'V' shaped chromosomes has to _____________
पर्याय
acrocentric
metacentric
telocentric
sub-metacentric
उत्तर
A 'V' shaped chromosomes has to metacentric
APPEARS IN
संबंधित प्रश्न
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
Name the sex chromosomes in human males and females
Give appropriate biological or technical terms for the following :
The condition in which a pair of chromosomes carries similar alleles of a particular character.
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
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:
Chromosomes number is halved in _____________
Choose the correct answer:
During mitosis which of the following disintegrate ___________
Choose the correct answer:
Chromosomes number is halved in ____________
Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be _____________
Mention the contribution of the scientist given below in the study of chromosome:
Waldeyer
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Differentiate between
Chromatin and Chromosome.
Give Technical Terms
The stage when sister chromosomes separate from their paired condition.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
Multiple Choice Question:
How many chromosomes are found in a cell of humans?
Write the functional activity of the following structure:
Spindle fibers
The loss of one or more chromosomes in ploidy 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?
A male gorilla has 48 chromosomes in each of its body cells. How many chromosomes will each of the sperms have?
Distinguish between the following pair:
Karyotype and Karyokinesis
