STAAR Recap Day 4: Dihybrid & Non-Mendelian Genetics

STAAR Recap Day 4:

Dihybrid and Non-Mendelian Genetics

Dihybrid Crossing

Di- means 2. Dihybrid means crossing 2 traits.

Step 1: IDENTIFY each parent's genotype.

Dihybrid Crossing

Di- means 2. Dihybrid means crossing 2 traits.

Step 1: IDENTIFY each parent's genotype.

Step 2: For each parent, DISTRIBUTE the alleles from the 1st trait to the 2nd trait (1 parent is shown below).

Dihybrid Crossing

Di- means 2. Dihybrid means crossing 2 traits.

Step 1: IDENTIFY each parent's genotype.

Step 2: For each parent, DISTRIBUTE the alleles from the 1st trait to the 2nd trait (1 parent is shown below).

Step 3: Place all a parent’s allele pairs on the top and the other parent’s on the left. There should be ________ alleles above each column & to the left of each row.

​BH

​BH

​Bh

​BH

​Bh

​bH

​BH

​Bh

​bH

​bh

​9

​9

​3

​9

​3

​3

​9

​3

​3

​1

Non-Mendelian Genetics

Non-Mendelian Genetics

BREAK

ONE

MASKS

Non-Mendelian Genetics

BREAK

ONE

MASKS

TWO

BOTH

SPOTTED

Non-Mendelian Genetics

BREAK

ONE

MASKS

TWO

BOTH

SPOTTED

MIX

PINK

BLOOD TYPES

Blood Types

A A

A O

Blood Types

A A

A O

B B

B O

Blood Types

A A

A O

B B

B O

A B

Blood Types

A A

A O

B B

B O

A B

O O