In angiosperms, microsprogenesis and megasporogenesis

• occur in anther

• form gametes without further divisions

• Involve meiosis

• Involve meiosis

Which of the following immunoglobulins does constitute the largest percentage in human milk?

• lgD

• lgM

• lgA

• lgA

The cutting of DNA at specific locations become possible with the discovery of

• Restriction enzymes

• Probes

• Selectable markers

• Selectable markers

In the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree. 

• Autosomal dominant

• X-linked recessive

• Autosomal recessive

• Autosomal recessive

A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind?

• 0.5

• 1

• Nil

• Nil

Flowers are unisexual in

• Pea

• Cucumber

• China rose

• China rose

Balbiani rings rigs are sites of

• Lipid synthesis

• Nucleotide synthesis

• Polysaccharide synthesis

• Polysaccharide synthesis

Which of the following pairs is not correctly matched?

• Mode of reproduction                               Example
  Offset                                                        Water hyacinth
  
  
• Mode of reproduction                               Example
  Rhizome                                                     Banana
• Mode of reproduction                                       Example 
  Binary fission                                                      Sargassum 
• Mode of reproduction                                       Example 
  Binary fission                                                      Sargassum 

69.

Ectopic pregnancies are referred to as

• Pregnancies with genetic abnormality

• Implantation of embryo at site other than uterus

• Implantation of defective embryo in the uterus

• Implantation of defective embryo in the uterus

In his classic experiments on pea plants, Mendel did not use

• Seed colour

• Pod length

• Seed shape

• Seed shape