When two different genes came from same parent they tend to remain together.
i) What is the name of this phenomenon?
ii) Draw the cross with suitable example.
iii) Write the observed phenotypic ratio.

If you cross dominant genotype PV/PV male Drosophila with double recessive female and obtain F₁ hybrid. Now you cross F₁ male with double recessive female.
i) What type of linkage is seen?
ii) Draw the cross with correct genotype.
iii) What is the possible genotype in F₂ generation?

s.no	gamete types	Number of progenies
1	ABC	349
2	Abc	114
3	abC	124
4	AbC	5
5	aBc	4
6	aBC	116
7	ABc	128
8	abc	360

i) What is the name of this test cross?
ii) How will you construct gene mapping from the above given data?
iii) Find out the correct order of genes.

What is the difference between missense and nonsense mutation?

What does the condition synteny refers to?

Who coined the term crossing over? When does the crossing over occurs in a cell?

Crossing over occurs only in germinal cells. Yes or no. Support your answer.

What will be the result if there is a failure in the formation of synaptonemal complex Give one example of organism where such condition is noticed

Define terminalization.

Why do we call papaya a dimorphic plant.

Define the term mutation. Who coined the term?

Write a brief note on Castor Aruna variety.

What is ploidy?

Comment on the chromosomal condition; 2n - 2.

What are deficiency loops?