In human, during fertilization, a sperm firstly comes in contact with which layer of the ovum

• Zona pellucida

• Vitelline membrane

• Jelly coat

• Zona radiata

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and

• Evolution

• Limiting factors

• Saltation

• Natural selection

Theory of pangenesis was given by

• Darwin

• Lamarck

• Hugo de Vries

• Oparin

Darwins finches represent

• Morphological variations

• Geographical isolations

• Climate variations

• Reproductive isolation

Newly formed Biosphere Reserve of India (2013) is

• Pachmarhi

• Himalaya

• Cold desert

• Panna

Darwinism explains all the following except

• Within each species, there are variations

• Organisms tend to produce more number of offspring that can survive

• Offspring with better traits that overcome competition are best suited for the environment

• Variations are inherited from parents to offspring through genes

Which statement is correct for bacterial transduction?

• Transfer of some genes from one bacteria to another bacteria through virus

• Transfer of genes from one bacteria to another bacteria by conjugation.

• Bacteria obtain DNA directly

• Bacteria obtain DNA from other external sources

 The vector for T-DNA is

• Thermus aquaticus

• Salmonella typhimurium

•  Agrobacterium tumefaciens

• Escherichia coli

Which one of the following in birds indicates their reptilian ancestry?

• Scales on their hindlimbs

• Four-chambered heart

• Two special chambers crop and gizzards in their digestive tract 

• Egg with a calcareous shell

The protein α-1 antitrypsin is used to treat which of the following disease?

• Cancer

• Rhematoid arthritis

• Emphysema

• ADA deficiency disease in children