10th Class Biology Chapter 7 TestINHERITANCE

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Which nitrogenous base is found in RNA instead of the thymine found in DNA?

   1. Adenine

   2. Cytosine

   3. Uracil

   4. Guanine

2. The overall flow of genetic information from DNA to RNA to protein is known as the ......

   1. Base pairing

   2. Central dogma

   3. Helical model

   4. Transcription phase

3. Chromatin material is made of:

   1. Protein

   2. DNA

   3. RNA and Protein

   4. DNA and Protein

4. Each nucleotide of DNA is made of:

   1. Deoxyribose sugar

   2. Phosphate group

   3. Nitrogenous base

   4. All of these

5. What is the role of DNA in protein synthesis?

   1. Produces amino acids

   2. Provides the template for mRNA formation

   3. Transports proteins

   4. Stores proteins

6. The allele that is expressed, when two separate alleles are inherited:

   1. Dominant

   2. Recessive

   3. Homozygous

   4. Heterozygous

7. All nitrogenous bases are present in DNA except:

   1. Adenine

   2. Cytosine

   3. Uracil

   4. Guanine

8. When a cell is not dividing its chromatin is in the form of:

   1. Compact structure

   2. Fine thread

   3. Circular structure

   4. Square shape

9. Which of the following best describes the phenotypic ratio of the F2 geneation in a standard dihybrid cross?

   1. 3 : 1

   2. 1 : 2 : 1

   3. 9 : 3 : 3 : 1

   4. 1 : 1 : 1 : 1

10. DNA is a double-stranded helical molecule made of subunits called .......

    1. Amino acids

    2. Nucleotides

    3. Fatty acids

    4. Histones