Fundamentals of Genetics Welcome to your Fundamentals of Genetics 1. Who among the following is called the father of Genetics? Watson and Crick Darwin Mendel Lamarck2. Which term represents a pair of contrasting characters? Codominant genes Homozygous Heterozygous Allelomorphs3. An exception to Mendel's law is Linkage Independent assortment Dominance Purity of gametes4. Which one of the following is a phenotypic monohybrid ratio in F2 generation? 1:2:1 2:2 3:1 1:35. Chromosomal aberrations are caused by Change in the arrangement or the position of genes Change in both the number and arrangement of genes Change in the number of chromosomes Change in the structure of the gene6. The 9:3:3:1 dihybrid ratio is due to Segregation Homologous pairing Crossing over Independent assortment7. 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 Segregation Crossing Over Dominance Hybridisation8. What is the effect of sexual reproduction? Offspring is weak Offspring is like the parents Offspring is more vigorous Offspring is diseased9. The crossing of F1 to any of the parent is known as Back cross Test cross F1 cross All of the above10. Genetics is a branch of Biology dealing with Heredity in living beings Both Heredity and Variation None of these Variation in living beings11. The alternative form of a gene is Dominant character Alternate type Allele Recessive character12. The geometrical device that helps to find out all the possible combinations of male and female gametes is known as Crick square Bateson square Mendel square Punnett square13. The smallest unit of genetic material which produces a phenotypic effect on mutation is Recon Nucleic acid Muton Gene14. DNA structure was discovered by Watson and Crick Lamarck H.G.Khurana Mendel15. Mendel's findings were rediscovered by De Vries All the above Tschermark Correns16. The genotypic ratio of a monohybrid cross is 9:3:3:1 3:1 1:2:1 2:1:117. Which of the following is true about the "Law of Segregation"? All of the above Segregation of factors is due to the segregation of chromosomes during meiosis Alleles separate from each other during gametogenesis Law of segregation is the law of purity of gametes18. Pea plants were used in Mendel's experiments because They had contrasting characters All of the above They were cost effective They were easily available19. When an individual has both the genes of a contrasting character, it is said to be Genotype Heterozygous Homozygous Phenotype20. When two individuals differing in atleast one character are crossed, the process is known as Hybridisation Pedigree Selection None21 out of 20Please fill in the comment box below.
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