Class Notes (808,145)
Canada (493,092)
Biology (6,677)
Biology 1001A (1,723)
Tom Haffie (1,166)

L05 – Genome Structure and Variation

2 Pages
Unlock Document

Western University
Biology 1001A
Tom Haffie

L05 – Genome Structure and Variation DNA  chromosomes  chromatin  sequence Differences that matter are usually differences in DNA Genome – all of the DNA sequence in one copy of an organism’s chromosomes A given plant has 3 genomes: - ex. Nuclear genome - ex. Mitochondrial genome - ex. chloroplast genome C-Value – the amount of DNA in a particular genome (measured in weight by using picograms or in numbers by base pairs) - does not give indication of an organism’s complexity - range of genomic size w/in a taxonomic group varies greatly - ~5 orders of magnitude of difference in genomic size - Why would one salamander need WAY more DNA than another? Chromosomes - linear chromosomes are almost only found in Eukarya - Prokaryotic cell almost always have circular chromosomes - Number of chromosomes has no taxonomic value - #chromosomes does NOT equal complexity of an organism ploidy – refers to the number of sets of chromosomes ex. Triploid (3n) lizard has 3 sets of each of its chromosomes 3N=3C chromosome – packag
More Less

Related notes for Biology 1001A

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.