Genetics is the science of genes, heredity, and the variation of organisms. Humans began applying knowledge of genetics in prehistory with the domestication and breeding of plants and animals. In modern research, genetics provides important tools in the investigation of the function of a particular gene, e.g. analysis of genetic interactions. Within organisms, genetic information generally is carried in chromosomes, where it is represented in the chemical structure of particular DNA molecules.
Here is Few question from Genetics
1. Whose work with garden peas is the basis of modern genetics?
(a) Gregor Mendel
(b) Robert Hook
(c) Isaac Newton
(d) James Watson
2. The principle of segregation states that
(a) species cannot interbreed.
(b) plant seeds must be planted a specific distance from the parent plant before they will sprout.
(c) each parent gives only one of its hereditary “factors” to its offspring.
(d) the source of heredity is ultimately unknowable.
3. The principle of independent assortment states that
(a) one trait in an organism has no bearing on another.
(b) no general genetic principles can be inferred from the study of a single organism.
(c) two different species of plants grown side by side may exchange genetic information without breeding.
(d) genetic factors are spread equally among all cells of an organism.
4. If an individual organism is heterozygous, it has
(a) one form of a particular gene.
(b) two different forms of a particular gene.
(c) characteristics of both sexes.
(d) a fatal genetic disease.
5. One of the possible forms of a gene is called
(a) a zygote.
(b) a chromosome.
(c) an allele.
(d) a factor.
6. Eukaryotic cells are characterized by
(b) the ability to move on their own.
(c) genetic material scattered throughout the cell body.
(d) a well-defined nucleus and other membrane-bound structures.
7. Prokaryotic cells are characterized by
(a) an ATP metabolism.
(b) lack of genetic material.
(c) a single outer membrane and no defined nucleus or other internal structures.
8. Organelles are
(a) filaments that form between chromosomes.
(b) small structures within the cell that perform various tasks.
(c) light-sensitive spots found in some prokaryotes.
(d) deep creases in the cell’s membrane.
9. The duplication and division of a body cell’s chromosomes is called
10. Meiosis is
(a) the duplication and division of a body cell’s chromosomes.
(b) the cell-division process that produces gametes (sperm and eggs)
(c) the construction of a new cell membrane just before two daughter cells split.
(d) the programmed death of a cell after a certain number of divisions.