Practice free Molecular Basis of Inheritance (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
The application of 'statistical analysis and mathematical logic' to problems in biology for the first time was a hallmark of whose work?
The NCERT states: 'During Mendel’s investigations into inheritance patterns it was for the first time that statistical analysis and mathematical logic were applied to problems in biology.'
What was the significance of Mendel's large sampling size in his hybridization experiments?
The text mentions: 'His experiments had a large sampling size, which gave greater credibility to the data that he collected.'
Which of the following is not one of the contrasting traits of pea plants studied by Mendel?
Table 4.1 in the provided text lists 'Stem height', 'Flower colour', 'Flower position', 'Pod shape', 'Pod colour', 'Seed shape', and 'Seed colour' as contrasting traits studied by Mendel. Leaf arrangement is not mentioned.
According to Mendel's observations on the F1 generation from a cross between tall and dwarf pea plants, what was the phenotypic outcome?
The text states: 'Mendel observed that all the F1 progeny plants were tall, like one of its parents; none were dwarf'.
What is the primary role of a 'true-breeding line' in genetic experiments, as defined in the context?
The text defines a true-breeding line as 'one that, having undergone continuous self-pollination, shows the stable trait inheritance and expression for several generations.'
The provided text discusses the enrichment of understanding regarding the molecular basis of evolution. Which of the following areas is not explicitly mentioned as contributing to this understanding?
The text states: 'Awareness in the areas of molecular genetics, structural biology and bio informatics have enriched our understanding of the molecular basis of evolution.' Paleontology is not mentioned in this context.
Which statement accurately describes the expression of traits in Mendel's F2 generation from a monohybrid cross?
The text states: 'at the F2 stage both the traits were expressed in the proportion 3:1. The contrasting traits did not show any blending at either F1 or F2 stage.'
What mechanism explains why alleles of a parental pair separate or segregate from each other during gamete formation, as inferred by Mendel?
The text explains: '...when the tall and dwarf plant produce gametes, by the process of meiosis, the alleles of the parental pair separate or segregate from each other and only one allele is transmitted to a gamete.'
A Punnett Square is a graphical representation used for what purpose in genetics?
The text defines it as: 'It is a graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross.'
What term is used to describe the physical expression of characters in an organism, contrasted with its genetic makeup?
The text states: 'The factors (now known as gene) on chromosomes regulating the characters are called the genotype and the physical expression of the characters is called phenotype.'
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