Biology-Online • View topic - Expected frequency of tetrad spores with Tetratype

Join for Free!
122085 members

Expected frequency of tetrad spores with Tetratype

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

Moderator: BioTeam

Expected frequency of tetrad spores with Tetratype

Postby sproti » Sat May 18, 2013 3:50 am

This problem is written in my language (not english) so I'll try to translate it the best I can. I've spend the last hour trying to figure this out but I just can't understand this problem.

The fungi S. cerevisiae creates tetrad spores. How high of a ratio can be expected of tetrad spores with tetratype (both parental types and recombinants) if there are 14 map units between genes?

A. 7%
B. 14%
C. 28%
E. 86%

So I assume what they mean is basicly among PD (Parental ditype), NPD (Nonparental ditype) and T (Tetratype) what ratio of tetrad spores has the tetrad type. I understand that the tetrad type itself will have parental types of 86% (43% each) and recombinants will have 14% (7% each) but I have no idea how I figure out the ratio of tetratypes.
Posts: 1
Joined: Sat May 18, 2013 3:37 am

Return to Genetics

Who is online

Users browsing this forum: No registered users and 0 guests