Q. When a cross is made between a tall plant with yellow seeds (TtYy) and a tall plant with the green seed (Ttyy), what proportions of phenotype in the offspring could be expected to be

Q. Define and design a test-cross.

Q. Using a Punnett Square, workout the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.

Q. Explain the following terms with example
(a) Co-dominance
(b) Incomplete dominance

Q. How is sex determined in human beings?

Q. Who had proposed the chromosomal theory of the inheritance?

Q. What is pedigree analysis? Suggest how such an analysis can be useful.

Q. What is point mutation? Give one example.

Q. Explain the Law of Dominance using a monohybrid cross.

Q. A diploid organism is heterozygous for 4 loci, how many types of gametes can be produced?

Q. Briefly mention the contribution of T.H. Morgan in genetics.

Q. Differentiate between the following
(a) Dominance and Recessive
(b) Homozygous and Hetrozygous
(c) Monohybrid and Dihybrid.

Q. A child has blood group O. If the father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings.

Q. Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in $F_1$ generation for a dibybrid cross?

Q. Mention any two autosomal genetic disorders with their symptoms.