Fundamentals of Genetics Welcome to your Fundamentals of Genetics 1. When an individual has both the genes of a contrasting character, it is said to be Genotype Phenotype Homozygous Heterozygous2. The crossing of F1 to any of the parent is known as Back cross All of the above F1 cross Test cross3. An exception to Mendel's law is Purity of gametes Linkage Dominance Independent assortment4. Which term represents a pair of contrasting characters? Homozygous Allelomorphs Codominant genes Heterozygous5. The alternative form of a gene is Allele Alternate type Dominant character Recessive character6. Chromosomal aberrations are caused by Change in both the number and arrangement of genes Change in the structure of the gene Change in the number of chromosomes Change in the arrangement or the position of genes7. Which one of the following is a phenotypic monohybrid ratio in F2 generation? 1:2:1 1:3 2:2 3:18. DNA structure was discovered by Watson and Crick Mendel H.G.Khurana Lamarck9. Mendel's findings were rediscovered by All the above Tschermark Correns De Vries10. The genotypic ratio of a monohybrid cross is 9:3:3:1 1:2:1 3:1 2:1:111. Who among the following is called the father of Genetics? Watson and Crick Lamarck Mendel Darwin12. The smallest unit of genetic material which produces a phenotypic effect on mutation is Recon Gene Muton Nucleic acid13. 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 Hybridisation Dominance Crossing Over14. The geometrical device that helps to find out all the possible combinations of male and female gametes is known as Bateson square Mendel square Punnett square Crick square15. The 9:3:3:1 dihybrid ratio is due to Segregation Crossing over Homologous pairing Independent assortment16. Pea plants were used in Mendel's experiments because They were cost effective They had contrasting characters All of the above They were easily available17. Genetics is a branch of Biology dealing with Variation in living beings None of these Heredity in living beings Both Heredity and Variation18. What is the effect of sexual reproduction? Offspring is like the parents Offspring is more vigorous Offspring is weak Offspring is diseased19. When two individuals differing in atleast one character are crossed, the process is known as None Selection Pedigree Hybridisation20. Which of the following is true about the "Law of Segregation"? All of the above Law of segregation is the law of purity of gametes Alleles separate from each other during gametogenesis Segregation of factors is due to the segregation of chromosomes during meiosis21 out of 20Please fill in the comment box below.
