Resistance to a fungus in pea plants is conferred by gene ‘H’,which completely recessive to its allele ‘H’ for susceptibility.If a resistant female plant is crossed with a homozygous susceptible male,what would be order of genotype in pistillate parent,staminate parent,male gametes and egg

1.  Hh,HH,H,h

2.  hh,Hh,h,h

3.  hh,HH,H,h

4.  Hh,HH,h,H

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4
Correct Answer :

hh,HH,H,h


Explanation :
No Explanation available for this question

The kingdom of prokaryotes is

1.  Protista

2.  Monera

3.  Fungi

4.  Plantae

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4
Correct Answer :

Monera


Explanation :
No Explanation available for this question

The matching of a red fruit bearing tomato plant with yellow bearing plants yielded 173 plants.Out of these,84 bore red fruits,while 89 bore yellow fruits.The genotypes of the parents are most likely

1.  RR,rr

2.  RR,Rr

3.  Rr,rr

4.  rr,rr

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4
Correct Answer :

Rr,rr


Explanation :
No Explanation available for this question

In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statement is true about archaea

1.  Archaea resemble eukarya in all respects

2.  Archaea have some noble features that are absent in other prokaryotes and eukaryotes

3.  Archhaea completely differ from both prokaryotes and eukaryotes

4.   Archaea completely differ from prokaryotes

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4
Correct Answer :

Archaea have some noble features that are absent in other prokaryotes and eukaryotes


Explanation :
No Explanation available for this question

Albinism,the total lack of melanin pigment,is due to a recessive gene a.A normal man and a normal woman,both of whom had one albino parent,marry.What is the probability of their having an albino child

1.  All

2.  None

3.  50%

4.  25%

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4
Correct Answer :

25\%


Explanation :
No Explanation available for this question

Thermococcus, Methanococcus and Methanobacterium exemplify

1.  archaebacteria that contain protain homologous to eukaryotic core histones

2.  archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercolied

3.  bacteria whose DNA is relaxed or poisitively supercolied but, which have a cytoskeleton as well as mitochondria

4.  bacteria that vcontain va cytoskeleton as well as mitochondria

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4
Correct Answer :

archaebacteria that contain protain homologous to eukaryotic core histones


Explanation :
No Explanation available for this question

In man,brown eyes(B) are dominant over blue(b) and dark hair (D) dominant over red hair(d).A man with brown eyes and red hair marries a woman with blue eyes and dark hair.They got two children;one resembling the man and other the woman,genotypes of the man and woman were

1.  BBdd,bbDD

2.  Bbdd,bbDd

3.  Bbdd,bbDd

4.  Bbdd,bbDD

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4
Correct Answer :

Bbdd,bbDd


Explanation :
No Explanation available for this question

The probability of getting abc phenotype from a cross Aa Bb Cc× aa Bb cc is

1.  ½

2.  ¼

3.  1/8

4.  1/16

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4
Correct Answer :

1/16


Explanation :
No Explanation available for this question

Mendel’s law apply only whens

1.  F1 in monohybrid cross shows two types of ndividuals

2.  The characters are linked

3.  Parents are pure-breeding

4.  First pair of contrasting character is dependent upon other pair

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4
Correct Answer :

Parents are pure-breeding


Explanation :
No Explanation available for this question

The principle of independent assortment of characters is proved by the

1.  Appearance of tall and dwarf plants in F2 population

2.  Appearance of tall and dwarf in the ratio 3:1 and also the appearance of smoothand wrinkled seed plants in the ratio 3:1

3.  Appearance of smooth and wrinkled seed plants in the F2 population

4.  Observation that F1 progeny is tall

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4
Correct Answer :

Appearance of tall and dwarf in the ratio 3:1 and also the appearance of smoothand wrinkled seed plants in the ratio 3:1


Explanation :
No Explanation available for this question
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