Juhi Mishra is teaching live on Unacademy Plus
Juhi Mishra CREDENTIALS M.sc Botaey Gold Medalist CET QUALIEIED DCA
Reproduction in Organisms Reproduction: (1) Reproduction is defined as a biological process in which every living organism give rise to new organisms similar to themselves. (2) Basic features of reproduction: (i) Replication of DNA (ii) Cell division (only mitotic, or both mitotic and meiotic) (ii) Formation of reproductive bodies or units. (iv) Development of reproductive bodies into offsprings.
Difference between Asexual and Sexual Reproduction Asexual Sexual Reproduction S.No Reproduction Offsprings are Involvement of 1) produced by single single or two parents. individual New individual develops from one cell or a vegetative body part of one parent. New individual develops from zygote or fusion product of two gametes, which mav or may not be produced by two parents. 2) Offsprings are genetically identical to their parents The offsprings are not genetically identical with their parents. 3)
Involves only mitotic divisions, Involves meiosis at one or the other stage. 4) Formation of sex organs is a pre- requisite for sexual reproduction It does not require 5)the formation of sex organs. It does not introduce It introduces variability and is, 6) variability. Hence hence of has no evolutionary evolutionary importance importance