Comments on: Weekly Genetics Quiz #48: Homozygous and Heterozygous

By: alysa

alysa — Sat, 31 Oct 2009 16:51:40 +0000

just use a punnett and if the two aleeles are the same (dominant or recessive) its homozygous which means pure bred heterozugous mean hybrid which would b the squares in the punnett with the two different alleles

By: sam ison

sam ison — Thu, 18 Oct 2007 03:53:28 +0000

i would like to know exactly how to extract genetic information from one of my friends and how i can use it to dominate the world

By: Maddy

Maddy — Fri, 25 May 2007 03:28:49 +0000

What makes traits dominant or recessive? I was wondering, and I would like it if somebody knew and replied. Thank you

By: Hsien Hsien Lei, PhD

Hsien Hsien Lei, PhD — Wed, 08 Nov 2006 19:26:38 +0000

laurence: Not that I'm aware of. With tissue type, the comparison is between two people who will be part of an organ donor-recipient pair. If you're concerned, I would advise you to speak to your personal physician. There's also more info at WebMD. All the best!

By: laurence

laurence — Tue, 07 Nov 2006 17:16:54 +0000

During a medical immunology masters, I discovered that I was homozygous with respect to tissue-typing
antigens.
Are there any consequences?

By: Hsien Hsien Lei, PhD

Hsien Hsien Lei, PhD — Sun, 30 Jul 2006 14:21:35 +0000

precious: It's not possible to tell whether a person is heterozygous or homozygous for a particular gene variant unless a DNA test is done. A Punnett square is only useful after the fact.

By: precious

precious — Sun, 30 Jul 2006 03:07:09 +0000

ummmmm, so how would you explain what we could do to determine whether a thing, person is heterozygous or homozygous using a punnet?