Fundamentals of Genetics Welcome to your Fundamentals of Genetics 1. Chromosomal aberrations are caused by Change in the arrangement or the position of genes Change in the structure of the gene Change in the number of chromosomes Change in both the number and arrangement of genes2. What is the effect of sexual reproduction? Offspring is weak Offspring is more vigorous Offspring is diseased Offspring is like the parents3. The geometrical device that helps to find out all the possible combinations of male and female gametes is known as Bateson square Punnett square Mendel square Crick square4. When two individuals differing in atleast one character are crossed, the process is known as None Selection Pedigree Hybridisation5. The smallest unit of genetic material which produces a phenotypic effect on mutation is Muton Nucleic acid Recon Gene6. The alternative form of a gene is Dominant character Alternate type Allele Recessive character7. Genetics is a branch of Biology dealing with Heredity in living beings Both Heredity and Variation None of these Variation in living beings8. Who among the following is called the father of Genetics? Mendel Lamarck Darwin Watson and Crick9. An exception to Mendel's law is Purity of gametes Independent assortment Linkage Dominance10. Which term represents a pair of contrasting characters? Allelomorphs Codominant genes Homozygous Heterozygous11. Pea plants were used in Mendel's experiments because All of the above They had contrasting characters They were cost effective They were easily available12. 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 gametes13. The genotypic ratio of a monohybrid cross is 1:2:1 9:3:3:1 2:1:1 3:114. 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 Crossing Over Dominance15. Mendel's findings were rediscovered by De Vries Tschermark Correns All the above16. The crossing of F1 to any of the parent is known as Back cross F1 cross All of the above Test cross17. When an individual has both the genes of a contrasting character, it is said to be Phenotype Heterozygous Homozygous Genotype18. Which one of the following is a phenotypic monohybrid ratio in F2 generation? 3:1 1:2:1 2:2 1:319. DNA structure was discovered by Lamarck Watson and Crick Mendel H.G.Khurana20. The 9:3:3:1 dihybrid ratio is due to Homologous pairing Segregation Independent assortment Crossing over21 out of 20Please fill in the comment box below.
