Which one of the given pollination technique/adaptation is different than others?

• Herkogamy

• Geitonogamy

• Dichogamy

• Heterostyly

The phenotypic ratio of trihybrid cross in F₂-generation is

•  27: 9: 9: 9 : 3 : 3 : 3: 1

• 9 : 3 : 3 : 1

• 1 : 4 : 6 : 4 : 1

• 27 : 9 : 3 : 3 : 9 : 1 : 2 : 1

A point mutation where guanine is replaced by cytosine is also called

• Frameshift mutation

• Transition mutation

• Translocation mutation

• Transversion mutation

44.

Which one of the following antibodies play an important role as mediator in allergic response?

• IgE

• IgG

• IgD

• IgA

Which one of the following human ancestors is known as tool maker?

• Homo erectus

• Java man

• Homo habilis

• Heidelberg man

Which one of the following is a matching pair of vector and the disease?

• Culex – Filariasis

•  Housefly – Leprosy

• Aedes aegypti – Chickenpox

• Sandfly – Cholera

Consider these following sentences and choose the correct ones.

(I) Each gene contains a specific promoter region and a leader sequence for guiding the beginning of transcription.

(II) Only one strand of DNA, called template strand is copied by RNA polymerase this strand runs in 3ʹ → 5ʹ direction.

(III) RNA polymerase adds complementary nucleotides forming single strand mRNA in 3ʹ → 5ʹ direction.

(IV) Section of DNA that has been transcribed is rewound into its original configuration.

• II, III and IV

• II and IV

• I, II and IV

• I, II, and IV

In animals normally which organism has a maximum number of chromosomes?

• Butterfly

• Elephant

• Hermit crab

• Chimpanzee

During meiosis-I, the bivalent chromosomes clearly appear as tetrads during

• Diakinesis

• Diplotene

• Pachytene

• Zygotene

Snapdragon flower is an exception of Mendel’s laws. It is a good example of

• Law of dominance

• Complementary gene

• Codominance

• Incomplete dominance