Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Can some explain what how to solve for the fourth generation of a pedigree.
 one year ago
 one year ago
Can some explain what how to solve for the fourth generation of a pedigree.
 one year ago
 one year ago

This Question is Closed

wachBest ResponseYou've already chosen the best response.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.
 one year ago

wachBest ResponseYou've already chosen the best response.1
Did they give you the first 3 or last 3 generations?
 one year ago

wachBest ResponseYou've already chosen the best response.1
Usually, a 4generation chat goes like this: 1st: You, and siblings 2nd: Your parents 3rd: Your grandparents 4th: Greatgrandparents and etc.
 one year ago

wachBest ResponseYou've already chosen the best response.1
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.
 one year ago

creightonBest ResponseYou've already chosen the best response.0
hold on I going to attach a pic
 one year ago

wachBest ResponseYou've already chosen the best response.1
Sorry, I don't really understand. I wish you good luck, though :)
 one year ago

creightonBest ResponseYou've already chosen the best response.0
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 45 in the third generation will show the trait Choices 25% 50% 100% 0%
 one year ago

creightonBest ResponseYou've already chosen the best response.0
I know that it is not 50%
 one year ago

wachBest ResponseYou've already chosen the best response.1
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?
 one year ago

wachBest ResponseYou've already chosen the best response.1
That means a chart for their possible children would be like this: dw:1344888602483:dw
 one year ago

creightonBest ResponseYou've already chosen the best response.0
I understand the chart but how does this help?
 one year ago

wachBest ResponseYou've already chosen the best response.1
Okay. Let's think about the couple, 4 and 5. Assume that circle = female, and square = male. 4's mom displayed the recessive trait, so that means that she was tt. Two of 4's siblings displayed the trait, and two didn't. However, because 4's mom had tt, we can assume that 4 has one t in their genetic coding, and that they're Tt because they didn't display the trait, meaning they got one dominate allele.
 one year ago

wachBest ResponseYou've already chosen the best response.1
The same reasoning goes for 5's dad, who had tt because they displayed the trait. But 5 themself didn't display the trait, meaning they're Tt. Does that sort of make sense?
 one year ago

wachBest ResponseYou've already chosen the best response.1
So, the table that I drew shows the possible outcomes for 4 and 5's kids. There is a 75% chance that the kid won't display the trait (TT, Tt, and Tt are dominate) There is a 35% chance the kid will display the trait (tt) Does that answer your question? :)
 one year ago

creightonBest ResponseYou've already chosen the best response.0
Yes, thank you so much :)
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.