Principles of I...

Sickle cell anaemia is a case of

Give a chromosome segment a-b-c with $$40\%$$ interference, the frequency of double cross-over (dco) will be.

What will happen, if the sperm containing $$'X'$$ chromosomes fertilises the Ovum?

Following is a pedigree for the albinium (aa). What is the probability of II-I to be beterozygous?

Study the pedigree chart of a certain family given and select the correct conclusion which can be drawn for the character.

In the given pedigree chart, the mutant trait is shaded black. The gene responsible for the trait is

Sudden change in genetic character is known as 

A homozygous recessive with cd genes was crossed with dominant (+ +).If their hybrid is test crossed and the following result was obtained 
++ - 900
cd - 880
+d - 115
+c - 105
than what will be the distance between genes c and d.

Presence of which of the following in the cells of amniotic fluid is responsible for the sex determination of the embryo?

In a polygenic inheritance of skin colours controlled by two gene pairs, how many phenotypes, mulattoes and total progenies are formed in $$F_2$$.