A. homozygote

B. allelomorph

C. hybrid

D. ecotype

A. At ovulation

B. During meiosis

C. During cleavage

D. At fertilization

A. a pair of homologous chromosomes

B. a pair of non-homologous chromosomes

C. a pair of sister chromosomes

D. a pair of non-sister chromosomes

A. all tall

B. 50% tall and 50% dwarf

C. all dwarf

D. data insufficient

A. Similar triplet codes for amino acids

B. Energy is stored by high energy rich phosphate bonds

C. Types of protein present in the body.

D. Ribosomes act at sites of protein synthesis

A. 1:1

B. 3:1

C. 1:2:1

D. 9:3:3:3

A. cause the death of the organism in which they are present

B. cause the death of the homozygous infant being formed

C. cause the death of heterozygous infant being formed

D. all of the above

A. 25

B. 25.6

C. 26

D. 26.5

A. directly related to crossing over

B. same as translocation

C. inversely related to crossing over

D. opposite to segregation

A. inbreeding

B. cross-breeding

C. back-crossing

D. self-fertilization

A. X-rays

B. UV-rays

C. $\beta$-rays

D. 5-Bromo-Uracil

A. t-RNA

B. m-RNA

C. s-RNA

D. hn-RNA

A. Herting and Van Beneden

B. Sutton and Boveri

C. Hofmeister and Waldeyer

D. Farmer and Moore

A. Homozygous

B. Heterozygous

C. Hemizygous

D. Incomplete dominance

A. monosomy

B. trisomy

C. triploidy

D. polyploidy

A. nondisjunction

B. crossing over

C. segregation

D. hybridization

A. none of her daughters are colour-blind

B. all her sons are colour-blind

C. all her daughters are colour-blind

D. half of her sons are colour-blind

A. Mast and Pantin

B. Watson and Crick

C. Corren, Tschermark and Hugo de Vries

D. Khorana and Nirenberg

A. recon

B. muton

C. criston

D. replicon

A. transitions

B. transversions

C. intragenic complimentation

D. intergenic complimentation

A. Genetics

B. Evolution

C. Morphology

D. Cytology

A. monohybrid

B. dihybrid

C. trihybrid

D. backcross

A. four

B. seven

C. six

D. one

A. Hugo de Vries

B. T.H. Morgan

C. Sturtevant

D. H.J. Muller

A. $AB, R{H}^{+}$

B. $AB, R{H}^{-}$

C. $O, R{H}^{-}$

D. $O, R{H}^{+}$

A. Genome

B. Genepool

C. Genotype

D. Phenotype

A. chromosomes are composed of DNA and protein

B. genes are composed of chromosomes

C. organism cannot live withoutchromosomes

D. genes are located on the chromosomes and are transmitted to the next generation through them.

A. deficiency of vitamic C

B. sex-linked abnormality

C. absence of rods in retina

D. absence of visual purple in retina

A. megachromosome

B. heterosome

C. polytene chromosome

D. super numerary chromosome

A. crossing over

B. synapse

C. chiasmata

D. terminalization

A. Curly hair

B. Sickle-cell anaemia

C. Colour-blindness

D. Down's syndrome