Mendel's laws were rediscovered in which of the following years ?
Gregor Johann Mendel is regarded as father of which of the following?
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Plant breeding
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Genetics
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Botany
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Cytogenetics
Mendel's laws were rediscovered in which of the following years ?
Who wrote the classical book 'Problems in Genetics'?
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C. Stern
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W. Bateson
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Hugo de Vries
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W.L. Johannsen
Which of the following scientists introduced the terms genotype and phenotype?
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W.L. Johannsen
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W. Bateson
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G.J. Mendel
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R.C. Punnett
How many different types of gametes are produced by an individual having the genotype Aa Bb CC Dd Ee?
Which of the following is the reason for Mendel's success ?
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Initially, Mendel studied the inheritance of only one pair of contrasting characters at a time.
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He analysed the reasons for the failure of previous workers.
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Mendel was lucky..
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All of the above
The explanation of 3: 1 ratio, according to the law of segregation, is based on which of the following assumptions?.
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Production of two types of gametes in equal frequencies in F_{1}
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Equal survival of the different gametes.
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Random union of male and female gametes and equal survival of the different zygotes.
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All of the above
Which of the following terms was coined by W. Bateson?
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Allelomorph
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Homozygote
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Heterozygote
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All of the above
Which of the following scientists independently rediscovered the Mendel's laws?
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Hugo de Vries, W. Bateson and R.C. Punnett.
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Carl Correns, T.H. Morgan and H.J. Muller
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Eric von Tschermak, Joseph Koelreuter and Charles Darwin.
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Hugo de Vries, Carl Correns and Eric von Tschermak.
Who gave the term genetics?
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W.L. Johannsen
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W. Bateson
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R.C. Punnett
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G.J. Mendel
Why Mendel selected pea for his study?
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Due to larger size of flower.
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Due to short span of life-cycle.
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Due to self-pollinated nature of the crop.
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All of the above
How many characters were studied by Mendel in garden pea ?
Who of the following proposed that Mendel's 'factor' be called 'gene'?
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W. Bateson
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R.C. Punnett
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W.L. Johannsen
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Hugo de Vries
An F_{2} of a trihybrid cross will give which of the following phenotypic ratios ?
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9:3:3:1
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1:46:4:1
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27:9:9:9:3:3:3:1
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27:9:9:3:3:1
In a trihybrid cross, what will be the minimum size of a perfect F_{2} population?
In case of incomplete dominance, how many different phenotypes will be observed in F_{2} if 4 pairs of alleles were segregating?
An F_{1} hybrid with the genotype Aa Bb Cc Dd will produce how many different types of gametes?
Which of the following describes the Mendel's concept of gene?
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The development of each character is controlled by a gene and each gene exists in two alternative forms called alleles.
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Two alleles of a gene do not modify the effect of each other when they exist together in the same cell.
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Each somatic cell has two copies of a gene and alleles of a gene separate and pass into different gametes of the hybrid.
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All of the above
The chromosomal theory of inheritance was proposed by which of the following?
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Morgan and Morgan
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Morgan and Sturtevent
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Sutton and Bovery
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Bateson and Punnett
A family has four children. What is the probability that there are 2 girls and 2 boys?
During 1901, who suggested that during meiosis homologous chromosomes are paired side by side ?
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Winiwarter
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Correns
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Montogemery
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Cannon
Which of the following describes segregation?
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Two alleles of a gene separate during gamete formation to yield two types of gametes in 1: 1 ratio.
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Production of 1:2:1 genotypic ratío
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Production of 3: 1 phenotypic ratio in F_{2} F_{2}
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Production of 1:2:1 genotypic and 3: 1 phenotypic ratios in F_{2}
Which of the following is correct about dominance? I. Generally the allele encoding functional molecule is dominant. II. In some cases, the allele encoding the non-functional molecule is dominant. III. It describes relationships between alleles of the same gene.
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I, II, III
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II, III
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I, III
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I, II
Due to which of the following phenomenon, recessive trait appear/express in F_{1} ?
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Dominance
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Pseudo-dominance
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Codominance
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Epistasis
Reappearance of the ancestral form of a trait after one or more generations is called which of the following?
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Mutation
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Epistasis
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Paramutation
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Atavism
Nucellus of ovules contains which of the following?
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Haploid (n) chromosome number
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Diploid (2n) chromosome number
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Triploid (3n) chromosome number
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Both (a) and (b)
Which of the following is the group of selfed progeny of a single self-fertilizing, homozygous plant ?
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Clone
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Inbred
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Pureline
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Hybrid
Which of the following is not correct about gene ?
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It is a segment of DNA.
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It encodes an RNA or a polypeptide which has structural, regulatory enzymatic or hormonal function.
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It is responsible for the development of the, characters of an organism.
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It is located in nucleus only.
An F_{2} of a dihybrid cross will yield 9 different genotypes in which of the following ratios ?
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1:2:1:4:4:1:1:1:1
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1:2:1:2:4:2:1:2:1
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1:3:2:2:1:2:2:1
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2:1:4:1:4:1:1:1
A normal girl married a normal male. Out of their four children, one child had a recessive genetic disease. What are the genotypes of the two parents for gene a, which is responsible for this diseases ?
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AA, Aa
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Aa, aa
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AA, aa
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Aa, Aa