Solve online MCQs (Multiple Choice Questions) on Heredity and Variation with answers and test reporting. Test No. 1
Heredity and Variation: MCQs Quiz - 1
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Individuals with Down syndrome have ______ copies of chromosome 21.
Which of the followings is a well known autosomal abnormality at birth?
Mendel's principle of segregation means that the germ cells always receive
One pair of alleles
One quarter of the genes
One of the paired alleles
Any pair of alleles
The inactivated X chromosome is referred to as a _____ body.
The genotype of a plant showing the dominant phenotype can be determined by
What is the pattern of inheritance called in which phenotype is influenced by many genes?
Select the incorrect statement from the following?
Baldness is a sex-limited trait
Linkage is an exception to the principle of independent assortment in heredity
Galactosemia is an inborn error of metabolism
Small population size results in random genetic drift in a population
Which one of the followings is assigned an uppercase letter?
The exchange of segments of non-sister chromatids between chromosomes of a homologous pair is termed
In blood group typing in human, if an allele contributed by one parent is IA and an allele contributed by the other parent is i, the resulting blood group of the offspring will be
An individual who has two different alleles of a gene is called ______.
The genotype is called a ______ when a person is heterozygous at two different loci.
Haploids are more suitable for mutation studies than the diploids. This is because
All mutations, whether dominant or recessive are expressed in haploids
Haploids are reproductively more stable than diploids
Mutagens penetrate in haploids more effectively than is diploids
Haploids are more abundant in nature than diploids
The genetic defect-adenosine deaminase (ADA) deficiency may be cured permanently by
Enzyme replacement therapy
Periodic infusion of genetically engineered lymphocytes having functional ADA cDNA
Administering adenosine deaminase activators
Introducing bone marrow cells producing ADA into cells at early embryonic stages
Which one of the following cannot be explained on the basis of Mendel’s Law of Dominance?
Factors occur in pairs
The discrete unit controlling a particular character is called a factor
Out of one pair of factors one is dominant, and the other recessive
Alleles do not show any blending and both the characters recover as such in F2 generation
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