tragictruthofme
New Member
hai..im just wondering if anyone can give me some help with dihybrid crosses i just cant seem to understand them...any help would be much appreciated!!
-
Looking for HSC notes and resources? Check out our Notes & Resources page
dihybrid crosses?!?! (1 Viewer)
- Thread starter tragictruthofme
- Start date
bluesky100
Carly :-)
A dihybrid cross involves two pairs of contrasting traits. In the simplest dihybrid crosses, it is assumed that the genes for the traits are located on different chromosomes and so Mendel's laws are true for them.
Predicting the results of a dihybrid cross is rather more complicated than a monohybrid cross because one needs to consider all the possible combinations of the two alleles for the two traits in each parent's gametes and then all the possible gamete combinations at fertilization.
* http://www.biologie.uni-hamburg.de/b-online/library/cat-removed/dihyb.gif (dihybrid cross image)
If you have a look through this link there are some good explanations on dihybrid crosses; also the info here gives a more simplified explanation.
Hope that helps!
Predicting the results of a dihybrid cross is rather more complicated than a monohybrid cross because one needs to consider all the possible combinations of the two alleles for the two traits in each parent's gametes and then all the possible gamete combinations at fertilization.
* http://www.biologie.uni-hamburg.de/b-online/library/cat-removed/dihyb.gif (dihybrid cross image)
If you have a look through this link there are some good explanations on dihybrid crosses; also the info here gives a more simplified explanation.
Hope that helps!