Genetics after Mendel

Question 1

Define mono hybrid cross

Answer 1

A cross between two individuals that are hybrid for one trait

Question 2

Distinguish between codominant and incomplete dominance

Answer 2

When an offsprings phenotype is a combination of the parents phenotype. ( white flower crossed With red flower gives all F1 pink flowers) In this case neither allele is dominant.

In the other hand when both alleles Can be observed independently in a phenotype it is called co-dominance. ( if a child receives allele type A from one parent and allele type B from another parent when he or she will have blood type AB.

Question 3

Define polygenic inheritance

Answer 3

Polygenic inheritance occurs when multiple genes determine the phenotype of a trait

Question 4

Explain how the pedigree is used

Answer 4

Since pedigree shows genetic traits that were inherited by members of a family then a pedigree helps determine whether the truth is a genetic link

Question 5

Define mutation

Answer 5

Mutations any permanent change in the sequence of DNA

Question 6

What’s Role can mutation play in the inheritance of Diseases

Answer 6

If mutation occurs in the reproductive cells Leading to the formation of a disease then this disease will be inherited to offsprings