Genetics Day 2: Dihybrid Crosses Simple description:
The hardest part of a dihybrid cross is figuring out the
gametes. What is an easy method used to
this?
First set -
AB
Outer set -
Ab
Aa Bb
inner set -
a B
Last set -
ab
Dad
Mom
set
SsBb
SsBb
00
B
Homologous
Pais
Hornocogous
Pair
Homologous
Paw
seperous
Egg combinations
Sperm combinations
Gametes
Example 1: Short tails (S) are dominant over long tails (s); Black fur (B) is dominant over yellow fur (b)
How many would have short tails, black fur?
Short tail, yellow fur?
Long tail, black fur?
Long tall, ye low fur?