Colourless, unicellular, cell wall bound spherical or rod – shaped microorganism and lacking organized nucleus is called

1.  Mmycoplasma

2.  Virus

3.  Bacterua

4.  Cyanobaceria

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4
Correct Answer :

Bacterua


Explanation :
No Explanation available for this question

Sex of a human child is determined by

1.  size of the egg

2.  size of sperm

3.  sex chromosome of the father

4.  sex chromosome of the mother

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4
Correct Answer :

sex chromosome of the father


Explanation :
No Explanation available for this question

Sex chromosomes are found in the cells of

1.  testes

2.  ovaries

3.  kidney and liver

4.  All of these

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4
Correct Answer :

All of these


Explanation :
No Explanation available for this question

XY chromosomes were discovered by

1.  Nettie Stevens

2.  MJD White

3.  Robert Brown

4.  Mendel

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4
Correct Answer :

Nettie Stevens


Explanation :
No Explanation available for this question

In human zygote, male sex is determined by

1.  strength of father

2.  strength of mother

3.  composition of required chromosome pair

4.  None of the above

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4
Correct Answer :

composition of required chromosome pair


Explanation :
No Explanation available for this question

Unfertilized egg of human contains

1.  XX chromosome

2.  one Y-chromosome

3.  X and Y-chromosome

4.   one X-chromosome

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4
Correct Answer :

one X-chromosome


Explanation :
No Explanation available for this question

When released from ovary, human egg contains

1.  XY chromosomes

2.  one X-chromosomes

3.  Two X-chromosomes

4.  one Y-chromosome

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4
Correct Answer :

one X-chromosomes


Explanation :
No Explanation available for this question

Normal maize has starchy seeds which remain smooth when dry.A mutant form has sugary seeds,which go crinckled when dry.When a mutant was crossed with a normal plant,an F1 was produced which has smooth seeds.What would be the relative ratios of the different seed types,if the F1 was allowed to self

1.  1 smooth : 3 sugary

2.  3 smooth : 1 sugary

3.  1 smooth : 1 sugary

4.  All sugary

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4
Correct Answer :

3 smooth : 1 sugary


Explanation :
No Explanation available for this question

Gregor Mendel conducted ….. experiments on garden peas

1.  Qualitative

2.  Quantitative

3.  Hybridization

4.  None of these

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4
Correct Answer :

Hybridization


Explanation :
No Explanation available for this question

Mendel conducted experiments on garden pea for seven years,during

1.  1856-1863

2.  1868-1875

3.  1886-1893

4.  1900-1907

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4
Correct Answer :

1856-1863


Explanation :
No Explanation available for this question
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