lec21 - Lecture 21 Aberrant Ploidy I. Aberrant euploidy A....

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

View Full Document Right Arrow Icon
Lecture 21 – Aberrant Ploidy I. Aberrant euploidy A. examples of differing ploidy monoploid 1x diploid2x triploid 3x tetraploid 4x pentaploid 5x hexaploid 6x octaploid 8x B. in nature - in plants (and less commonly, animals) – 30 – 35% of naturally occurring plant species  are polyploid. - endopolyploidy – in many animals, some cells may be polyploid II. Monoploidy – 1n, rare result of errors in cell division A. Usually sterile B. in some species, some individuals are monoploid - males in social insects (ants, bees, wasps) - males produced by parthenogenesis - not sterile because C. useful experimentally and in agriculture - experimental use of monoploidy - but how do you get back to diploid? 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
Picture 3 Picture 34 2
Background image of page 2
Picture 35 Picture 36 III. Polyploids (odd vs. even chromosome #) A. Odd ploidies  1. origins of triploid
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

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

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

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

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

This note was uploaded on 07/01/2011 for the course L 311 taught by Professor Forrester during the Fall '10 term at Indiana State University .

Page1 / 8

lec21 - Lecture 21 Aberrant Ploidy I. Aberrant euploidy A....

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