# i need to understant where to Put the dominate and the ressive/like either on top,sides,.is there hints..?

is there any hints i can use for my exam/qizz 2morrow? and it's about monohybrid and dihybrid? my problem is that i don't know where to put the capital A or little a ,,are they should be on top bottom or mabye double aa on the side or vice versa?

please iam sooooooo confused n my quizz 2morrow very important!!!

Update:

guys i need to know like how? how and when to put mabye one capital and one small on the side or 2 capitals or vise versa.

Relevance

One parent's alleles go across the top and the other parent's alleles go down the side. The order does not matter.

So if you crossed AA by Aa you could put A, A across the top and A, a down the side (or vice versa) to calculate your square (resulting in 4 offspring).

If it is a dihybrid cross (eg: AABB x AaBa) you would list AB, AB, AB, AB across the top and AB, Ab, aB, ab down the side (for 16 offspring)

Usually it is the male across the top and the female down the side but that is not important if you are just trying to calculate probabilities etc.

I hope that makes sense.

http://www.usoe.k12.ut.us/curr/science/sciber00/7t...

yes Maegan b is right

it really does not matter where you put the recessive or the dominant

A A this is from a homozygous dominant person AA

a Aa Aa

a Aa Aa

and aa is from a homozygous ressecive

if it's from a heterozygous Aa and Aa the chart will be lyke this

A a

A AA Aa

a Aa aa

therefore there is a 50% chance of Aa heterozygous offsprings

25% chance of homozygous reccesive aa

25% chance of homozygous Dominant AA

Maybe this will help...

A A

a IAa_IAa_I

a IAa_IAa_I

or

A a

A IAA_IAa_I

a IAa_Iaa_ I

i tried? :)