University:
Swansea University
Course:
PM-133 | Evolutionary and Molecular Genetics
Academic year:

2023
Views:

295

Pages:

2
Author:

Amal J.

MaoblasticAP(1) Telocethal Egg2>clearcytoplamPronocewstolkV9-Denseegg present throughout cyto plasmyolk(a) Radial cleavage - cephalopod molliscsBilateralCephalopod molloscsconfined in the animal side (AP)(ib)Discoldal cleavage - Fish, Reptites & Birds (aves)AP(pisces)disclike cytoplasm @ APVPAPwithcrown likecellsLanedusVPi)colon(2) Controlecithal Egg(a)superficial cleavage - Insects.Pepperal nallowstrip of cytoplascals. (c) bilateral cleavage -> tunicales (sponge like)when a sygote divides into 2blastomere, they divide hyits own and form mirrorimages, 2halves equal.(d) Rotational cleavageMammals & nematodesGroundworms -C. elegons,ascalis).arrangement ofspindle fibresare inoblique fashionAPspindle fitresVP(2)Mesolecethat EggModerate amount of yolk, yolk despositedthrough vegetal polecleavage(a) Displaced Radial cleavage- AmphibionsA'P tausmo Mainta3.VP cleavage becomes slower(viMeridional deavageTopokosispankencidianSignato250mglequatorialapick1,201,000silledidealvage displacedsultosal produrowistowards AP.amotoric