Fundamentals of Genetics Welcome to your Fundamentals of Genetics 1. 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 square2. Mendel's findings were rediscovered by All the above Tschermark Correns De Vries3. When an individual has both the genes of a contrasting character, it is said to be Genotype Heterozygous Phenotype Homozygous4. When two individuals differing in atleast one character are crossed, the process is known as Pedigree Hybridisation Selection None5. Which one of the following is a phenotypic monohybrid ratio in F2 generation? 1:3 2:2 3:1 1:2:16. What is the effect of sexual reproduction? Offspring is like the parents Offspring is weak Offspring is more vigorous Offspring is diseased7. The crossing of F1 to any of the parent is known as Test cross All of the above F1 cross Back cross8. 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 Crossing Over Dominance Hybridisation Segregation9. Genetics is a branch of Biology dealing with Both Heredity and Variation Variation in living beings None of these Heredity in living beings10. The alternative form of a gene is Allele Dominant character Alternate type Recessive character11. DNA structure was discovered by Mendel Watson and Crick Lamarck H.G.Khurana12. Chromosomal aberrations are caused by Change in the structure of the gene Change in the arrangement or the position of genes Change in both the number and arrangement of genes Change in the number of chromosomes13. An exception to Mendel's law is Independent assortment Purity of gametes Dominance Linkage14. Pea plants were used in Mendel's experiments because They had contrasting characters They were easily available All of the above They were cost effective15. The genotypic ratio of a monohybrid cross is 1:2:1 3:1 2:1:1 9:3:3:116. Which of the following is true about the "Law of Segregation"? 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 gametes All of the above17. The 9:3:3:1 dihybrid ratio is due to Independent assortment Segregation Homologous pairing Crossing over18. The smallest unit of genetic material which produces a phenotypic effect on mutation is Nucleic acid Gene Muton Recon19. Who among the following is called the father of Genetics? Lamarck Watson and Crick Mendel Darwin20. Which term represents a pair of contrasting characters? Homozygous Heterozygous Allelomorphs Codominant genes21 out of 20Please fill in the comment box below.
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