2200.32 - I f the hor se could speak onick A Cartoon uide...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Gonick: A Cartoon Guide to Genetics I f the horse could speak?
Background image of page 1

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

View Full DocumentRight Arrow Icon
Chromosomal M utations (ploidy) These changes are extremely rare and usually lethal Why are they almost always lethal?
Background image of page 2
Wheat Rust Emerges – and is Beaten Back n the early 1950’s a major outbreak of leaf rust fungus destroyed 40% of spring wheat crop in North America Science 2009 In the late 1950’s Earnest Sears introduced a rust resistant line by stealing a gene for resistance from wild grass
Background image of page 3

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

View Full DocumentRight Arrow Icon
VI-10 Sear’s 1950’s Program to Combat Leaf Rust in Wheat (Forced Polyploidy) Not inter-fertile
Background image of page 4
VI-10 Sear’s 1950’s Program to Combat Leaf Rust in Wheat (Forced Polyploidy) How could you force polyploidization to generate a “diploid” plant Resistant but a poor producer Resistant but very poor producer
Background image of page 5

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

View Full DocumentRight Arrow Icon
VI-10 Sear’s 1950’s Program to Combat Leaf Rust in Wheat (Forced Polyploidy) How would you select for this plant? How would you isolate the gene for resistance? Resistant but weedy Why did Sears choose to irradiate the pollen? D* = D chromosome set plus a translocated fragment of the C chromosome carrying the resistance gene
Background image of page 6
VI-10 Sear’s 1950’s Program to Combat Leaf Rust in Wheat (Forced Polyploidy) How would you select for this plan Wasn’t wheat genetically engineered – a GM O?
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 25

2200.32 - I f the hor se could speak onick A Cartoon uide...

This preview shows document pages 1 - 8. Sign up to view the full document.

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