State whether the following statements are true or false. If false, r

1.	State whether the following statements are true or false. If false, rewrite them by changing the word underlined.1. A chromosome is mostly made up of RNA.2. Down’s syndrome is caused by the trisomy of the 10th chromosome.3. The somatic cells of females have XX pair of sex chromosome.4. In a normal dihybrid cross, phenotypic ratio is 9:3:3:1.
Answer» 1. A chromosome is mostly made up of DNA. 2. Down’s syndrome is caused by the trisomy of the 21^st chromosome. 3. The somatic cells of females have XX pair of sex chromosome-True. 4. In a normal dihybrid cross, phenotypic ratio is 9:3:3:1 -True.

State whether the following statements are true or false. If false, rewrite them by changing the word underlined.1. A chromosome is mostly made up of RNA.2. Down’s syndrome is caused by the trisomy of the 10th chromosome.3. The somatic cells of females have XX pair of sex chromosome.4. In a normal dihybrid cross, phenotypic ratio is 9:3:3:1.

Answer»

1. A chromosome is mostly made up of DNA.

2. Down’s syndrome is caused by the trisomy of the 21^st chromosome.

3. The somatic cells of females have XX pair of sex chromosome-True.

4. In a normal dihybrid cross, phenotypic ratio is 9:3:3:1 -True.