Question

Can some explain what how to solve for the fourth generation of a pedigree.

Answer 1

A fourth generation .. That should be your grandparents, then.
I can help you, to an extent. Just describe more on what you're supposed to do, please.

Answer 2

Did they give you the first 3 or last 3 generations?

Answer 3

Usually, a 4-generation chat goes like this:
1st: You, and siblings
2nd: Your parents
3rd: Your grandparents
4th: Great-grandparents
and etc.

Answer 4

Well, if you can find the parents of whoever is in the 3rd generation, you should be able to find your answer. If not, there are certain clues you can deduct from. Like for example, generally the last name(s) of the male(s) in the 3rd generation have the same last name as their parents.

Answer 5

hold on I going to attach a pic

Answer 6

Sorry, I don't really understand. I wish you good luck, though :)

Answer 7

This is the question I am trying to figure out how to do.

The pedigree chart below shows the individuals in a family who exhibit in a family who exhibit a certain trait. Based on the information in the chart, what are the chances that a second child born to couple 4-5 in the third generation will show the trait

Choices 25%
50%
100%
0%

Answer 8

I know that it is not 50%

Answer 9

Or 0%

Answer 10

Oh, I see.
So, if the 1st child born to the couple expressed the trait (as shown in yellow) but the parents both didn't, we know that it must be a recessive trait, right?
If this trait is represented in terms of T/t, with the small t being the recessive one that gives the trait, that must mean that the parents are both Tt.
Does that sort of make sense?

Answer 11

kind of

Answer 12

That means a chart for their possible children would be like this: