DNA as Genetic Material

Q. The short segments of replicated DNA are called .

Q. The specific point on the DNA, where the replication begins is the origin of replication.

1. True
2. False

Q.

What do you call something that runs in the family?

Q. Match the following enzymes to their functions in replication of DNA.

1. Adding nucleotides
2. Joining DNA strands
3. Unwinds DNA
4. RNA primer synthesis

Q. Identify the correct order in which genetic material is organised (largest to smallest).

1. Genome, chromosome, gene, nucleotide
2. Chromosome, genome, nucleotide, gene
3. Chromosome, gene, genome, nucleotide
4. Genome, chromosome, nucleotide, gene

Q.

Question 19
From the list given below, select the character which can be acquired but not inherited

(a) Colour of eye
(b) Colour of skin
(c) Size of body
(d) Nature of hair

Q. Which of the following is a characteristic of the DNA molecule?

1. Made up of nucleotides
2. Nitrogenous bases are AUGC
3. Single stranded molecule
4. Absent in viruses

Q.

Why is negative-strand DNA synthesized?

Q. Fill in the blanks:
(i) DNA replicates in the ................. of the cell cycle.
(ii) Chromatin fibre is made up DNA and ................. .
(iii) There are two nucleic acids ................. and ................. .
(iv) DNA acts as director of ................. synthesis.
(v) DNA strands are made up of, pentose sugar and four types of ................. bases.

Q. What are the Okazaki fragments?

Q. plasmid has double stranded single circular DNA or single stranded single circular DNA?

Q.

Identify the following processes in the diagrams below;

1. I – replication, II – karyokinesis, III - cytokinesis

2. I –karyokinesis, II – cytokinesis, III- replication

3. I – karyokines, II – replication, III - cytokinesis

4. I – cytokinesis, II – karyokinesis, III - replication

Q. is intelligence is hereditary character?explain with reason

Q. What is meant by plasmid?

Q.

the eye colour amoung the human beings are varied as blue black brown green etc, A, this is calledas variation

Q.

Select the inherited characters in human beings.

1. Eye colour
2. Hair colour
3. Skin colour
4. Facial features

Q.

Which of the following can be termed as biological heredity?

1. Acquiring food habits and styles

2. Transmission of cultural legacy

3. Acquiring life skills from parents

4. Transmission of traits governing complexion

Q.

Recombinase enzyme is involved during

1. diplotene

2. diakinesis

3. pachytene

4. zygotene

Q. Ligase enzyme is used for which of the following?

1. Denaturation of DNA
2. Splitting DNA into small bits
3. Joining bits of DNA
4. Digestion of lipids

Q.

Purines are the same in both DNA and RNA.

1. True

2. False

Q. The short segments of replicated DNA are called .