Question

Fill in the blanks: 

1. The pairs of contrasting character (traits) of Mendel are called …….. 

2. Physical expression of a gene is called ……….. 

3. The thin thread like structures found in the nucleus of each cell are called ………. 

4. DNA consists of two ……….. chains. 

5. An inheritable change in the amount or the structure of a gene or a chromosome is called ………

Answer 1

1. alleles or allelomorphs 

2. Phenotype 

3. Chromosomes 

4. Polynucleotide chain 

5. Mutation