Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents?

(1) Incomplete dominance

(2) Law of dominance

(3) Inheritance of one gene

(4) Codominance

Subtopic:  Dominance Deviation from Mendel: 2 |
 67%
From NCERT
NEET - 2013
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The incorrect statement with regard to haemophilia is

(1) it is a sex-linked disease

(2) it is a recessive disease

(3) it is a dominant disease

(4) a single protein involved in the clotting of blood effected

Subtopic:  Mendelian Disorders: Hemophilia |
 82%
From NCERT
NEET - 2013
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A normal-visioned man whose father was colourblind, marries a woman whose father was also a colourblind. They have their first child as a daughter. What are the chances that this child would be colourblind?

(1) 100%

(2) 0%

(3) 25%

(4) 50%

Subtopic:  Sex Linked Recessive Inheritance |
 62%
NEET - 2012
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Which one of the following conditions correctly describes the manner of determining the sex in the given example?

(1) XO type of sex chromosomes determine male sex in grasshopper

(2) XO condition in humans as found in Turner syndromee, determines female sex

(3) Homozygous sex chromosomes (XX) produce male in  Drosophila

(4) Homozygous sex chromosomes (ZZ) determine female sex in birds

Subtopic:  Sex Determination: Further Considerations |
 70%
From NCERT
NEET - 2011
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Mutations can be induced with 

(1) IAA

(2) ethylene

(3) gama radiations

(4) infra red radiations

Subtopic:  Recombination Gene Mapping |
 75%
NEET - 2011
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Which one of the following cannot be explained on the basis of Mendel's Law of Dominance?

(1) The discrete unit controlling a particular character is called a factor

(2) Out of one pair of factors one is dominant, and the other is recessive

(3) Alleles do not show any blendings and both the characters recover as such in F2 generation.

(4) Factors occur in pairs

Subtopic:  Law of Segregation |
 70%
From NCERT
NEET - 2010
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The genotype of a plant showing the dominant phenotype can be determined by

(1) test cross

(2) dihybrid cross

(3) pedigree analysis

(4) back cross

Subtopic:  Monohybrid Cross: Further Understanding |
 84%
From NCERT
NEET - 2010
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ABO blood groups in humans are controlled by the gene I. It has three alleles — IA, IB and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?

(1) Three

(2) One

(3) Four

(4) Two

Subtopic:  Dominance Deviation from Mendel: 2 |
 82%
From NCERT
NEET - 2010
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Select the correct statement from the ones given below with respect to dihybrid cross.

(1) Tightly linked genes on the same chromosome show higher recombinations

(2) Genes far apart on the same chromosome show very few recombinations

(3) Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones

(4) Tightly linked genes on the same chromosome show very few recombinations.

Subtopic:  Linkage |
 79%
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NEET - 2010
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Sickel cell anaemia is

(1) an autosomal linked dominant trait 

(2) caused by substitution of valine by glutamic acid in the β-globin chain of haemoglobin.

(3) caused by a change in base pair of DNA

(4) characterized by elongated sickle like RBCs with a nucleus. 

Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
From NCERT
NEET - 2009
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