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प्रश्न
The two non-sister chromatids of a paired chromosome are attached to each other at ______ during the process of crossing over.
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उत्तर
The two non-sister chromatids of a paired chromosome are attached to each other at chiasma during the process of crossing over.
संबंधित प्रश्न
What is the number of chromosomes in the gametes of human beings?
The term “chromosomes” literally means ______.
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:
Chromosome is most coiled at (in mitosis) ________________
Label the lettered parts of the given figure and answer the following questions:
(i) What does this diagram represent?
(ii) What is the importance of'd'?
(iii) What are the 'staining' properties of 'b' and 'c'?
(iv) Who gave the term used for this structure today?
(v) What is a?
(vi) Is 'e' present in all chromosomes?
Choose the correct answer:
Sex of an individual is determined by ____________
How does colchicine act as mitotic poison? Is there any advantage of it?
State how does meiosis maintains chromosome number in a species.
Differentiate between
Chromatin and Chromosome.
Explain the Term Centrioles
Give Technical Terms
The stage at which synapsis in chromosomes to form bivalents.
Multiple Choice Question:
How many chromosomes are found in a cell of humans?
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Write the functional activity of the following structure:
Spindle fibers
Name the following:
Pair of genes responsible for a particular characteristic.
Give Technical Term:
Transmission of characters through generations.
Match the following.
| 1. Autosomes | - | Trisomy 21 |
| 2. Diploid condition | - | 9 : 3 : 3 : 1 |
| 3. Allosome | - | 22 pair of chromosome |
| 4. Down’s syndrome | - | 2n |
| 5. Dihybrid ratio | - | 23rd pair of chromosome |
Read the following statements and select the correct option.
Statement I: The densely packed transcriptionally active, light staining region of chromatin is known as 'Heterochromatin'.
Statement II: The loosely packed, dark staining transcriptionally inactive region of chromatin is known as 'Euchromatin'.
