Lecture_5_Dihybrids_2011

Lecture_5_Dihybrids_2011 - Dihybrid Crosses Probability Jan...

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

View Full Document Right Arrow Icon
Dihybrid Crosses & Probability Jan 21 nd , 2011
Background image of page 1

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

View Full Document Right Arrow Icon
Announcements Homework available online today https://blackboard.unc.edu/ Form study groups
Background image of page 2
Review Crossing lines that differ by one character is called a MONOHYBRID cross DOMINANT alleles are expressed in the F1 of a monohybrid cross Traits segregate in a 3:1 ratio in the F2 generation of a monohybrid cross The 3:1 ratio is actually a 1:2:1 ratio since 2/3 of the dominant class are HETEROZYGOUS
Background image of page 3

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

View Full Document Right Arrow Icon
Dihybrid Cross Shorthand Crossing lines that differ by two characters is called a DIHYBRID cross AB/ab – two linked pairs of alleles A/a;B/b – two unlinked pairs of alleles A/a • B/b – two alleles of unknown linkage
Background image of page 4
Mendel’s Dihybrid Crosses
Background image of page 5

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

View Full Document Right Arrow Icon
3:1 Ratio is Maintained Look at just round v. wrinkled: 9/16 + 3/16 = (3/4) round 3/16 +1/16 = (1/4) wrinkled Same true for yellow v. green Therefore 3:1 segregation ratio is maintained for each character
Background image of page 6
Branching Diagrams (3/4) round (1/4) wrinkled (3/4) yellow
Background image of page 7

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

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

{[ snackBarMessage ]}

Page1 / 19

Lecture_5_Dihybrids_2011 - Dihybrid Crosses Probability Jan...

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