Login

Join for Free!
113911 members


Genetics question

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderator: BioTeam

Genetics question

Postby bio185 » Thu Mar 29, 2012 5:30 pm

Can someone help with this question?

A plant has 3 traits: red flower, round seeds and spiny stem which are dominant over white flower and long seed and round stem.

You are told that two of these traits are linked and one segregates independently.

Explain what linkage and independent segregation means.

Describe how you would set up crosses in order to determine which genes are linked and which are not linked.

Would you be able to map all three genes on the chromosomes? If so how?
bio185
Garter
Garter
 
Posts: 3
Joined: Thu Mar 29, 2012 1:16 pm

Postby JackBean » Thu Mar 29, 2012 5:35 pm

1) you should find that on the internet or in your textbook easily

3) you would need to use gene mapping and localization with genetic markers
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5654
Joined: Mon Sep 14, 2009 7:12 pm

Postby bio185 » Thu Mar 29, 2012 5:43 pm

How would work out question 3?
bio185
Garter
Garter
 
Posts: 3
Joined: Thu Mar 29, 2012 1:16 pm


Re: Genetics question

Postby ayubian20 » Fri Apr 06, 2012 7:21 am

it is somewhat difficult to draw a squarer chart of this cross..
linkage and independent assortment depends upon the the distance between two genes..
closer the two genes stronger will be the gene linkage and lesser will be the chances of independent assortment..
so far away the two genes greater will be the chances of independent assortment..
ayubian20
Garter
Garter
 
Posts: 2
Joined: Fri Apr 06, 2012 7:07 am


Return to Genetics

Who is online

Users browsing this forum: No registered users and 0 guests

cron