Advertisements
Advertisements
प्रश्न
Complete the following sentence with appropriate word :
The spindle fibers are made of _______.
Advertisements
उत्तर
The spindle fibers are made of Microtubules.
APPEARS IN
संबंधित प्रश्न
Name the sex chromosomes in human males and females
Correct the following statement if there is any mistake:
If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Mention the contribution of the scientist given below in the study of chromosome:
Waldeyer
What are chromosomes?
State how does meiosis maintains chromosome number in a species.
Differentiate between
Chromatin and Chromosome.
Name the following:
Microtubules form the bipolar spindle in which stage.
Multiple Choice Question:
The period between two successive mitotic divisions is
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.
The region of the chromosome where the spindle fibres get attached during cell division ______
The number of chromosomes found in human beings is ______.
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 |
Explain the structure of a 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'.
In higher unisexual animals, one pair of chromosomes is not identical in two sexes. It is called as ______.
Define the following term:
Chromosome
