I want to see the whole crossing of drosophila between yellow bodied white eyed female with brown bodiedred eyed male
Answers
Answer: TO UNDERSTAND THIS YOU MUST BE FAMILIAR WITH MEIOSIS 1&2 BELIEVE ME ITS VERY IMPORTANT
actually DROSOPHILA flies are ightly linked together
Explanation:
the drosophila cross did not followed law of independent assortment thats why , scientist came up with the term linkage , scientist name was th morgan
what they found was the phenotypic ratio was different from 9:3:3:1
it was infact 3:1(due to linkage)
linked genes does not show recombination thats why parental ganes are present more
before i proceed further you should be clear that linkage is nothing but association of two genes
in fruit flies normal wings are dominant over vestigial wings while gray colour is dominant over the black colour suppose that shape of wings is linked to colour trait
replication first takes place
during meiosis 1 sunapsis between homologous(non sister chromatids)this produces geneticallyrecombinant chromosomes
AFTER THIS - SYNAPSES TAKES PLACE THEN CROSSING OVER TAKES PLACE
REFER TO IMAGE\
when genes are tightly linked even lesser recombinant takes place
what you asked is about eye and body actually these genes are tightly linked and crossing over faces difficulty so genes are not recombinated actually
the image is for loosely linked genes
