BIOL 210 Lecture Notes - Nymphalidae, Lek Mating, Vertically Transmitted Infection
27 Sep 2014
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Can"t proliferate through males: are cytoplasmically-transmitted endosymbionts really capable of enough mischief to drive male evolution, cytoplasm maternally-inherited, so males should be targets of selfish endosymbionts. F function: may also help by reducing self-fertilization (inbreeding, see when cross f1 generation has lowered male function. Can be inheritance of mito from both male and female. But when sons are formed, sperm carry male-type mitochondria (larger than female) Allows these four mitochondira to survive in certain tissues: testis and abductor muscle (thing that closes clam) Probably their because sperm benefit from having different type of mito. Transmission if from sperm to testis and sperm to testis. Only situation where mitochondia have found a work around . A different species of mito that are extremely well adapted to providing energy for sperm. In some bivalves (mostly mussels) , there are special m-type (male) mitochondria and normal. F-type (inherit both: females are all f-type, male embryo preserve m-type mitochondria in the testis tissue.
