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Q. No.A gene showing co-dominance has
1. One allele dominant on the other
2. Alleles tightly linked on the same chromosome
3. Alleles that is recessive to each other
4. Both alleles independently expressed in the heterozygote
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe term "linkage" was coined by
1. T.H. Morgan
2. T.Boveri
3. G.Mendel
4. W.Sutton
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree:
1. Autosomal dominant
2. X-linked recessive
3. Autosomal recessive
4. X-linked dominant
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA 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? (consider the grandsons only through son)
1. 0.5
2. 1
3. Nil
4. 0.25
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn his classic experiments on pea plants Mendel did not use
1. Seed color
2. Pod length
3. Seed shape
4. Flower position
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA pleiotropic gene
1. Is expressed only in primitive plants
2. Is a gene evolved during Pliocene
3. Controls a trait only in combination with another gene
4. Controls multiple traits in an individual
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHow many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
2. Six
3. Eight
4. Seven
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology2. duplication
3. translocation
4. crossing over
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology2. at different loci on the same chromosome
3. at the same locus of the chromosome
4. on non-sister chromatids
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(1) formation of abnormal ova in the mother
(2) fusion of two ova and one sperm
(3) fusion of two sperms and one ovum
(4) formation of abnormal sperms in the father
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