Mutations and Genetic code A change of single base pair point mutation in the 6th position of Beta globin chain of Haemoglobin results due to the change of amino acid residue glutamate to valine. Number of characters studied by Mendel in Pea was a 5 b 7 c 6 d 4. The Lac Operon Lac operon consists of one regulatory gene i and three structural genes y,z and a. Which of the following inhibits protein synthesis by binding to 50 S ribosome a Tetracycline b Streptomycin c Erythromycin d Penicillin 37. At which stage is the fate of genetic constitution of gametes finally decided? How would you test a pea plant whether it is a pure or hybrid for tallness? A pea with white flowers was crossed to another pea which is also white flower plant.
White eyed and long wind male drosophila was crossed to a vestigial winged red eyed female. Translation process: Translation is the process of polymerisation of amino acids to form a polypeptide. Revision notes in exam days is one of the best tips recommended by teachers during exam days. . Soon after infection, before lysis of cells, the E.
Which conserved motifs are found in E. Choose the answer showing the correct order of alphabets. Actin binding sites are located on a Troponin b Tropomyosin c Meromyosin d Both tropomyosin and meromyosin e Both troponin and tropomyosin 42. At which stage is the fate of genetic constitution of gamets finally decided? Be Determined Towards Your Goal For Success attitude is equally as important as ability 7. Chromatin is the repeating unit of nucleosome. These results into diseased condition called sickle cell anaemia. Which of the following gives information about the phenotype but not the genotype? When a yellow mouse was crossed to another Yellow House, the F1 generation produces yellow and brown black mice in the ratio 2: 1.
The search for Genetic Material Transforming principle — Frederick Griffith in 1928 conducted experiment on bacteria Streptococcus pneumoniae bacterium responsible for pneumonia. A pure tall pea was crossed with a pure dwarf Pea. Codon is unambiguous and specific, code for one amino acid. Which sequence of codons specifies for leucine-threonine-proline? Operon system consists of a operator and regulator genes b operator, regulator, repressor genes c operator, regulator, repressor, structural and prom genes d none of the above 22. The Adenosine forms base pair with Uracil instead of Thymine. Basic cause o f senile dementia as well as Alzheimer's disease is : a accumulation of acetyl choline mimics b degeneration of cholinergic nerve terminals c degeneration of adrenergic nerve terminals d accumulation of adrenaline mimics 8. A tobacco plant heterozygous for albinism a recessive character is self pollinated and 1200 seeds are subsequently germinated.
The second is the sequencing the all set of genome that contained the all the coding and non-coding sequence called sequence Annotation. Characters Leading strand Lagging strand 1. The technique of fingerprinting was initially developed by Alec Jeffrey. Salient features of Genetic Code are- i. A double homozygous yellow round plant of Pea is crossed with green wrinkled plant.
Both the amino acid residues carry positive charges in their side chains. Gene y code for permease, which increases permeability of the cell. Which of the following serves as a terminal codon? Genes that are involved in turning on or off the transcription of a set of structural genes are called a Polymorphic genes b Operator genes c Redundant genes d Regulatory genes 30. These are the Molecular Basis of Inheritance class 12 Notes prepared by team of expert teachers. How many types of gametes are expected from a plant with genotype PpQq, provided there occurs independent assortment? The law of segregation of characters is also called the law of purity of gametes because a Gametes have only one of the two alleles for each character b Gametes cannot be contaminated c Gametes are very different type of cell d It was just another name adopted accidentally. Which sequence of codons specifies for leucine-threonine-proline? There are two types of strain of this bacteria, some produce smooth shiny colonies S and others produce rough colonies R.
Be Determined Towards Your Goal For Success attitude is equally as important as ability 7. If % age of cytosine is 18%, then %age of adenine will be a 32% b 34% c 36% d 23% 17. The reason is a Homozygous yellow cannot survive due to lethal effect of genes b Yellow mice are not very suitable to live c There is no formation of zygotes with homozygous yellow constitution d None of the above 6. The results in F2 are expected to be a All tall b Tall and dwarf in 3 : 1 ratio c 50% tall d All dwarf 11. When a yellow mouse was crossed to another yellow mouse, the F1 generation produces yellow and brown-black mice in the ratio 2 : 1. Such mutations are called frame-shift insertion or deletion mutations. What is the number of linkage group in this animal? Histones are rich in the basic amino acid residues lysines and arginines.
The entire chromosome is replicated. Adenine and Thymine forms double hydrogen bond and Guanine and Cytosine forms triple hydrogen bonds. In the beginning it is formed in the form of small fragments called okazaki segments. The inheritance of skin colour in humans is an example of which of the following? Genes that are involved in turning on or off the transcription of a set of structural genes are called a Polymorphic genes b Operator genes c Redundant genes d Regulatory genes 30. Functioning of structural genes is controlled by a Operator b Promoter c Ligase d Regulatory gene 31.
Salient features of Human Genome: a The human genome contains 3164. Fragments It is formed continuously as single fragment. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. How many seedlings would have the parental phenotype? A sex linked recessive disorder in which the affected children mutilate themselves is a Cri du chat syndrome b Tay Sachs syndrome c Patau syndrome d Lesch Nyshan syndrome 7. Exons are interrupted by introns. Which one of the following character in man is controlled by a recessive gene? Gene a encode for transacetylase.
Ratio between completely homozygous dominant and homozygous recessive individuals of a dihybrid cross is a 1 : 1 b 2 : 2 c 6 : 10 d 10 : 6 18. Download revision notes for Molecular Basis of Inheritance class 12 Notes and score high in exams. The offspring shall be of a One type b Two types c Four types d Several types 14. Which sequence of codons specifies for leucine-threonine-proline? Which mendelian principle will not operate if two genes under study are close together a Paired unit factors b Dominace c Segregation d Independent assortment 20. These two phage preparations were allowed to infect the culture of E.