Heridity

Question 1

how variation affect organisms? does it affect in same way?

Answer 1

Depending on the nature of variation, different individuals will have different kinds of advantage

Question 2

What is heredity

Answer 2

The transmission of characteristics or traits from parents to their offspring is called heredity

Question 3

Observation by mendel on crossing parent plants

Answer 3

There were no halfway characteristics in the first generation(F1 progeny) , no middle height.
All plants were tall . Only one of the parental trait was seen not a mixture of two.

Question 4

Why did Mendel choose pea plants for studying inheritance

Answer 4

1) Because pea plants had a number of clear cut differences which were easy to tell apart
2) Pea plants were self-pollinating
3) He chose peas to study inheritance instead of animals because many generations of pea plants could be produced in a comparatively short span of time and their study is much simpler than that of animals

Question 5

Law of Dominance

Answer 5

In a heterozygous individual the trait expressed is the dominant trait and the trait not expressed is the recessive trait.

Question 6

Law of Segregation

Answer 6

A diploid organism passes a randomly selected allele for a trait to its offspring, such that the offspring receives one allele from each parent. There is no blending of the alleles..

Question 7

Law of Independent Assortment

Answer 7

The alleles of two different genes expressing two different characters separate independently during gamete formation

An allele of a gamete which is received for one gene does not influence allele received for another gene