Chromosomes

Q.

Replication of chromosomal DNA occurs during:

1. Interkinesis

2. Early prophase

3. Late anaphase

4. None of these

Q.

Histone protein synthesis occurs during :

1. phase

2. phase

3. Prophase

4. S phase

Q. Which of the following statements is NOT correct in regard to cell division?

1. Chromatin is found in the nucleus.
2. 
   Chromosomes can be seen just as cell division is about to occur
3. 
   Chromatin uncoils to form chromosomes.
4. Chromatin is made up of the DNA double helix and associated proteins.

Q.

Centromere is a part of:

1. Ribosome

2. Endoplasmic Reticulum

3. Mitochondrion

4. Chromosome

Q. DNA must be present in the form of for it to synthesise RNA.

1. chromatid
2. chromosome
3. nucleosome
4. chromatin

Q.

Question 13
Name a stain commonly used to colour chromosomes.

Q.

Question 4

Which of the following stain is not used for staining chromosomes?

(a) Basic fuschsin (b) Safranin

(c) Methylene blue (d) Carmine

Q. Assertion (A): Chromosomes are responsible for the transfer of characteristics from parents to offspring.

Reason (R): Chromosomes are present in the nucleus.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Q.

Which among the following sequences is correct in describing the genetic material present in the nucleus from the most basic to the most complex?

1. $\mathrm{Gene}\to \mathrm{Nucleus}\to \mathrm{Chromosome}$
2. $\mathrm{Chromosome}\to \mathrm{Nucleus}\to \mathrm{Gene}$
3. $\mathrm{Gene}\to \mathrm{Chromosome}\to \mathrm{Nucleus}$
4. $\mathrm{Nucleus}\to \mathrm{Gene}\to \mathrm{Chromosome}$

Q. 'Hereditary characteristics' means ____.

1. characters that are not expressed

2. characters that are passed from one generation to the other

3. characters that are not carried by genes

4. not sure