Upcoming SlideShare
×

# Trihybrid cross

2,944 views

Published on

Published in: Technology, Travel
1 Like
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

Views
Total views
2,944
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
13
0
Likes
1
Embeds 0
No embeds

No notes for slide

### Trihybrid cross

1. 1. Trihybrid cross AAPD2BB
2. 2. • The mating of two individuals, organisms, or strains that have different gene pairs that determine three specific traits or in which three
3. 3. Example:23 = 8 * 8 = 64MEANING:• The fork line method can be used by figuring the occurrence of each gene or set of genes to be found in the gamete, and then multiply them together.• This can be multiplied by figuring each trait or combination of traits separate for both the male
4. 4. P1: WWGG * ww ggF1: Ww Gg * Ww GgF2: Ww * Ww Gg * Gg WW Ww Ww ww GG Gg Gg ggPhenotypes: ¾W ¾ G = 9/16 WG ¼ g = 3/16 Wg ¼ w ¾ G = 3/16 wG ¼ g = 1/16 wgPhenotypic ratio: 9:3:3:1
5. 5. Genotypes: ¼ GG = 1/16 WW GG ¼ WW 2/ Gg = 2/ WW Gg 4 16 ¼ gg = 1/16 WW gg ¼ GG = 3/16 Ww GG 2/4 Ww 2/ Gg = 4/ Ww Gg 4 16 ¼ g = 2/16 Ww gg ¼ GG = 1/16 ww GG ¼ ww 2/ Gg = 2/ ww Gg 4 16 ¼ gg = 1/16 ww gggenotypic ratio: 1:2:1:2:4:2:1:2:1