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The allele which expresses itself only in the presence of other similar alleles.

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Important Questions on Genetics

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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 5
Mendelian cross which is carried out by taking one pair of contrasting character.
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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 5
Name the chemical substance which constitutes the genes (write the full form).
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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 5
The number of homologous chromosomes in each normal human cell (write in numerals).
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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 5

Name the nucleic acid that comprises the main constituent of chromosomes. (Write the full form) 

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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 5
 Name the second law of Mendel.
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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 5
The phenotype of the F2 generation in a self cross between offspring of a homozygous pea plant bearing red flowers and homozygous pea plant bearing white flowers.
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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 6
How can you say that there is a complete parallelism between the behaviour of Mendelian factors and chromosomes ?
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10th ICSE
IMPORTANT
ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 7

Differentiate between : Genotype and Phenotype.