Heredity and Ev...

Identify the odd one out from the following :

Mendel's experiments on dihybrid cross was based on

Mendel's Law of independent assortment stated that: 

In 1952, when still a graduate student, he circulated water, ammonia, methane and hydrogen, pass an electric discharge to simulate lightning and got complicated molecules associated with life such as amino acids. This experiment was one of the first great experiments which proved that life indeed could arise from non-living matter. 

If a heterozygous tall pea plant is self-pollinated, what will be the heterozygous:homozygous ratio of the progenies?

A brown-eyed couple has a blue-eyed child. The trait of brown eye (B) is dominant over that of blue-eyed (b). What is the genotype of the couple?

Which of the following statements (A - E) are wrong:
A. Mendel is called the 'Father of Genetics.'
B. The simplest cross conducted by Mendel is the dihybrid cross.
C. The dominant trait for the visible character seed colour selected by Mendel is green.
D. The first generation offspring is also represented as pure breeding.
E. Mendel's experiments are based on the cross-breeding of two plants of pea differing from each other.

How many genotypes are possible from a cross between the parent $$RR$$ and $$rr$$?

If different alleles are present in the same genotype, then it is called ______________.

In humans, sex is determined by :
I. 22 pairs of chromosomes which are exactly alike in male and female 
II. A pair of sex chromosomes 
III. Egg with single set of chromosome 
IV. Genetic make up of a sperm