MCDB Christoffersen Lecture #6

MCDB Christoffersen Lecture #6 - nonfunctional. Bacterial...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
MCDB Christoffersen Lecture #6 Sex-linked Traits Genes carried on sex chromosomes have a special inheritance pattern Examples: o White locus in Drosophila (X) o Re-green color blindness in humans (X) o TDF gene in humans (Y) In humans male gametes decide sex uses XY In chickens the female egg determines the sex and uses ZW Start of Chapter 15: Restriction Endonucleases: Where do they come from? Bacterial cells use restriction enzymes as a way to protect themselves from foreign DNA.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Restriction enzymes cleave DNA at specific sequences which make them
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: nonfunctional. Bacterial cells protect their own DNA from digestion by methylation the DNA at the sequence recognized by their own restriction enzyme. How is this all analyzed? o Restriction enzymes have been isolated from a wide variety of bacteria. Each enzyme has a unique recognition site. o By selecting enzymes which cut at site which includes a DNA mutation allow scientists to detect the presence of a DNA polymorphism. o An example of this is gel electrophoresis, but only works in a small genome....
View Full Document

Page1 / 2

MCDB Christoffersen Lecture #6 - nonfunctional. Bacterial...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online