XY – MECHANISM
rubabThis pattern of sex determim tion is round in Drosophila, man and many other organisms. (a) Male: Male is XY. Mite is heterogametic. It produces two types of sex-determining sperms.…
XO MECHANISM
The sex determining mechanism in which sex is determined by In X chromosome only is called X() mechanism. This pattern of sex determination is found in grasshopper and protenor bug.…
SEX DETERMINATION
The chromosomes which determine sex in the different organisms are called sex chromosomes. 'Fhe term -sex- refers to the processes that enable species to exchange materials between homologous chromosomes. Ii…
Sex Linkage in Man
Colour Blindness Color blindness, or color vision deficiency, in humans is the inability to differentiate between som or all colors that other people can distinguish. It is most often of…
Sex Linkage in Drosophila ( Reciprocal cross & Test cross )
Thomas Hunt Morgan (1910) discovered sex linkage in fruit fly Drosophila. It supported the chromosomal theory of heredity. Morgan deveioped cultures of Drosophila flies. He studied different traits like mour…
Sex linked inheritance definition , traits and example
The inheritance of a trait (phenotype) that is determined by a gene located on one of the sex chromosomes is called sex linked inheritance. The expectations of sex-linked inheritance in…
Multiple Choice Questions (MCQs) and Fill In the blanks
Experiments on Plant Hybridization was written by: (a) Sutten (b) Mendel (c) Darwin (d) De Varies Word gene was used by: (a) Sutten (b) Mendel (c) Bateson (d) De Varies…
SHORT QUESTIONS
What is Clinical genetics? Ans: It includes the training of genetists to diagnose, treat, and counsel patients with genetic disorders or syndromes. Who did rediscovred Mendel's work? Ans: re-discovered" by…
SUBJECTIVE QUESTIONS
Discuss different areas of genetics. I. Discuss scope of genetics. Discuss history of genetics. Define law of segregation? Give two Mendelian examples. Define low of Independent assortment. Give two Mendelian…
DEFINITIONS AND KEY POINTS FOR OBJECTIVES
TERMS DEFINITIONS Genetics The study of transfer of hereditary characters (genes) from parent to offspring is called genetics. Classical genetics The techniques and methodologies of genetics are called classical genetics.…