Fundamentals of Genetics Welcome to your Fundamentals of Genetics 1. Which term represents a pair of contrasting characters? Heterozygous Codominant genes Allelomorphs Homozygous2. Who among the following is called the father of Genetics? Watson and Crick Lamarck Mendel Darwin3. Mendel's findings were rediscovered by Tschermark All the above De Vries Correns4. Which one of the following is a phenotypic monohybrid ratio in F2 generation? 1:2:1 1:3 2:2 3:15. The crossing of F1 to any of the parent is known as Test cross F1 cross All of the above Back cross6. The geometrical device that helps to find out all the possible combinations of male and female gametes is known as Punnett square Crick square Mendel square Bateson square7. When an individual has both the genes of a contrasting character, it is said to be Heterozygous Genotype Phenotype Homozygous8. The alternative form of a gene is Allele Alternate type Dominant character Recessive character9. 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 Segregation Crossing Over Hybridisation10. The 9:3:3:1 dihybrid ratio is due to Crossing over Homologous pairing Segregation Independent assortment11. An exception to Mendel's law is Independent assortment Dominance Linkage Purity of gametes12. When two individuals differing in atleast one character are crossed, the process is known as Selection Pedigree Hybridisation None13. Pea plants were used in Mendel's experiments because They were easily available They were cost effective All of the above They had contrasting characters14. What is the effect of sexual reproduction? Offspring is like the parents Offspring is more vigorous Offspring is diseased Offspring is weak15. 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 gene16. DNA structure was discovered by Watson and Crick Mendel H.G.Khurana Lamarck17. The genotypic ratio of a monohybrid cross is 1:2:1 2:1:1 9:3:3:1 3:118. Genetics is a branch of Biology dealing with Both Heredity and Variation None of these Heredity in living beings Variation in living beings19. The smallest unit of genetic material which produces a phenotypic effect on mutation is Nucleic acid Gene Muton Recon20. Which of the following is true about the "Law of Segregation"? Alleles separate from each other during gametogenesis All of the above Segregation of factors is due to the segregation of chromosomes during meiosis Law of segregation is the law of purity of gametes21 out of 20Please fill in the comment box below.
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