What are variations? How do they help organisms?

1.	What are variations? How do they help organisms?
Answer» 1. Differences in characters within very closely related groups of organisms are referred to as variations. 2. Variations develop during reproduction in organisms. 3. Variations are passed from parent to offspring through heredity. 4. Beneficial variations are selected by the nature in evolution. 5. Variations increase the survival chance of the organisms. 6. These variations help the organisms to adapt to their environments. 7. For example, green colour in the beetles is a variation that gave a survival advantage to the beetles as they cannot be seen by the crows. 8. Some variations do not help organisms to survive. For example, colour variation occurs in red beetles and some blue beetles are produced instead of red beetles as they are eaten by crows easily.

Answer»

1. Differences in characters within very closely related groups of organisms are referred to as variations.

2. Variations develop during reproduction in organisms.

3. Variations are passed from parent to offspring through heredity.

4. Beneficial variations are selected by the nature in evolution.

5. Variations increase the survival chance of the organisms.

6. These variations help the organisms to adapt to their environments.

7. For example, green colour in the beetles is a variation that gave a survival advantage to the beetles as they cannot be seen by the crows.

8. Some variations do not help organisms to survive. For example, colour variation occurs in red beetles and some blue beetles are produced instead of red beetles as they are eaten by crows easily.

Discussion

No Comment Found

Related InterviewSolutions

F2 Generation.
What is the genotype ratio in F2 generation of monohybrid cross?
The % of short character in F2 generation is ………. A) 100% B) 75% C) 50% D) 25%
From which of the following F2 generation is produced ? A) Parental generation B) F2 generation C) F1 generation D) From F2 generation only
How do traits get expressed according to Mendel?
What are the differences between homozygous and heterozygous ?
What is genotypic ratio of monohybrid crdss between homozygous tall pea plant with homozygous dwarf pea plant?A) 2 : 1 : 1 B) 1 : 1 : 2 C) 1 : 2 :1 D) 2 : 2 : 1
The genotypic ratio in F1 generation when crossed the tall and short plants. A) 1 : 2: 1 B) 3 : 1 C) 9 : 3 : 3 :1 D) 1 : 2 : 3
The alleles or factors which were named by Mendel are known as ………A) Genes B) Heritable factorsC) Factors D) Traits
According to Mendel, each character is expressed due to a pair of alleles or traits, which are known as A) Genes in pairs B) Response for the character C) Production of gametes D) Inherent character