Online Notes

Heredity Part-1  Very short questions and answers for S.E.E. students Questions and answers to practice for S.E.E. examination 1) What is genetics? Answer: Genetics is the branch of biological science which deals with the nature and behavior of genes. 2) What are genes? Answer: Genes are tiny units of heredity located in chromosomes. They are arranged in chromosomes in a linear fashion. 3) What is hybrids? Answer: Hybrids are the organisms produced after cross-fertilization between two genetically different organisms. 4) What do you mean by F₂- generation ? Answer: The generation obtained by crossing two parental stocks of F₁- generation is called F₂- generation or second filial generation. 5) Write scientific name of pea. Answer: The scientific name of pea plant is Pisum sativum . 6) What is genetic variation? Answer: Genetic variation is defined as the differences among the members of species. 7) State two functions of genes. Answer: Any two functions of genes are as foll...

Chromosome and Sex determination Part-2  Very short questions and answers for S.E.E. students Questions and answers to practice for S.E.E. examination 1) What is telocentric chromosome? Answer: The chromosome having cetnromere at one end of the chromatid is called telocentric chromosome. 2) What are hereditary characteristics? Answer: The characteristics which are transmitted from one generation to another are called hereditary characteristics. 3) How many types of chromosomes are there on the basis of position of centromere? Answer: On the basis of position of centromere, chromosomes are of following types:          (i) Metacentric          (ii) Sub-metacentric          (iii) Acrocentric      and          (iv) Telocentric 4) What types of cells contain haploid chromosomes? Answer: Gametes (male gamete or female gamete) contain haploid chromosomes. 5) Write any two...