Name:

Chapter 11Introduction to Genetics

11.1 The Work of Gregor Mendel

Genetics:

Heredity:

Mendelian Genetics

*

*

Traits:

Examples.

Pea Plant Traits1.

2.

3.

4.

5.

6.

7.

Performed experiments using ______________ plants.

Why pea plants?

Mendel’s ExperimentStep 1:

Fertilization:

Purebred:

Hybrid:

He called these plants the _______________________________________.

Step 2:

Monohybrid cross:

*

Step 3:

*

Overall

Genes:

*

These copies are called ________________.

Alleles are represented by ___________________.

Examples….

Principal of Dominant alleles:

Examples…

Principal of Recessicve alleles:

Examples…

Mendel’s First Law

Law of Segregation

Gamete:

Where do you get your sex cells from?

11.2 Applying Mendel’s Principal

Probability:

Punnett Squares:

Homozygous:

Homozygous Dominant:

Homozygous Recessive:

Heterozygous:

Genotype:

Phenotype:

 Your mother is homozygous for black hair and your dad has blonde hair. Black is dominant to blonde.

Mendel’s Second Law

Law of Independent Assortment:

11.3 Other Patterns of Inheritance

Incomplete dominance or intermediate inheritance:

Examples…

Codominance:

For example blood. What are the four blood types?1.2.3.4.

Blood Grouping Blood Type Genotype

If a woman who is 6 ‘3’ and mates with a male who is 6 ‘7’… does that mean their son or daughter will be tall? Why?

*

*

Polygenic inheritance:

Examples…

Environment

*

11.4 Meiosis

Homologous:

Diploid:

Haploid:

Almost all human cells are _________________ (2n). They contain two homologous sets

of chromosomes. Single set of chromosomes are called _________________(n). Gametes

are sex cells (eggs and sperm) and are haploid. For humans n= __________.

_______________ (n) is fusing with an ____________ (n). this is called ____________________.

The fertilized egg is called a ____________________ (2n).

Meiosis:

Mitosis:

Meiosis:

Stages of Meiosis Meiosis 1 Prophase 1:

Crossing over:

Metaphase 1:

Anaphase 1:

Telophase 1 and Cytokinesis:

Meiosis 2 Prophase 2:

Metaphase:

Anaphase 2:

Telophase 2 and Cytokinesis:

Gametes to Zygotes *

Zygote:

Genetic Linkage

*

*

Genetic linkage:

Mitosis vs. Meiosis

Mitosis Meiosis

Why does it happen?

Where does it happen in your body?

When does it happen during your lifetime?

Number of cells formed?

Number of chromosomes

Number of cell divisions

Types of cells formed