Fundamentals of Genetics Welcome to your Fundamentals of Genetics 1. Which of the following is true about the "Law of Segregation"? Alleles separate from each other during gametogenesis All of the above Law of segregation is the law of purity of gametes Segregation of factors is due to the segregation of chromosomes during meiosis2. The crossing of F1 to any of the parent is known as All of the above Test cross Back cross F1 cross3. Chromosomal aberrations are caused by Change in both the number and arrangement of genes Change in the number of chromosomes Change in the arrangement or the position of genes Change in the structure of the gene4. DNA structure was discovered by Mendel H.G.Khurana Lamarck Watson and Crick5. When two individuals differing in atleast one character are crossed, the process is known as None Hybridisation Selection Pedigree6. Who among the following is called the father of Genetics? Mendel Darwin Lamarck Watson and Crick7. Which one of the following is a phenotypic monohybrid ratio in F2 generation? 2:2 1:2:1 3:1 1:38. The genotypic ratio of a monohybrid cross is 3:1 2:1:1 1:2:1 9:3:3:19. When an individual has both the genes of a contrasting character, it is said to be Genotype Phenotype Homozygous Heterozygous10. Mendel's findings were rediscovered by Correns Tschermark De Vries All the above11. The alternative form of a gene is Allele Recessive character Dominant character Alternate type12. Pea plants were used in Mendel's experiments because They were easily available All of the above They had contrasting characters They were cost effective13. Genetics is a branch of Biology dealing with Heredity in living beings Both Heredity and Variation Variation in living beings None of these14. The smallest unit of genetic material which produces a phenotypic effect on mutation is Muton Recon Gene Nucleic acid15. An exception to Mendel's law is Purity of gametes Independent assortment Dominance Linkage16. Which term represents a pair of contrasting characters? Allelomorphs Homozygous Heterozygous Codominant genes17. The geometrical device that helps to find out all the possible combinations of male and female gametes is known as Mendel square Punnett square Crick square Bateson square18. The 9:3:3:1 dihybrid ratio is due to Independent assortment Crossing over Homologous pairing Segregation19. A cross was made between tall and dwarf plants. In F1 generation, all plants were tall, when the F1 plants were self pollinated, the tall and dwarf plants appeared in 3:1 ratio in F2 generation. This phenomenon is known as Dominance Crossing Over Hybridisation Segregation20. What is the effect of sexual reproduction? Offspring is like the parents Offspring is more vigorous Offspring is weak Offspring is diseased21 out of 20Please fill in the comment box below.
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