3 TTO Unit 5.1 Genotype and Phenotype

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

Anatololacerta pelasgiana

Unit 5 Heredity and Evolution

Book 2/3 B 

Minor test

Major test

Let's do a little inventory..

Which characteristics do you have?

Make sure you write down the results

I can roll my tongue

YES

NO

Which hand do you write with?

LEFT

RIGHT

NO PREFERENCE

Hand clasping?

Today

Basics 1 Genotype and Phenotype

• Explanation 

Learning objectives: You can explain the difference between genotype and phenotype

You can explain that cells only use the hereditary information that they need

Body cells, chromosomes, DNA

Chromosomes

Inside the cell nucleus are structures called chromosomes

They are DNA strands and contain all of your inherited characteristics

Genes

A gene is a peice of DNA that contains the information for a characteristic 

1. Where can you find this information in your textbook?

                                                        Each body cell contains all the 
                                                   genes but not all genes are active

To inherit = to receive a characteristic from an ancestor by genetic transmission. 

• Genotype = the information for an organism’s complete hereditary characteristics
• Phenotype = visible and invisible physical characteristics of an organism

           Phenotype = genotype + environmental factors. 

Phenotype = genotype + environmental influences

The phenotype changes…

…but the genotype doesn’t.

If you look at this persons hair..

1. Phenotype
2. Genotype
3. Phenotype en Genotype

The eye color of these people are.

1. Phenotype
2. Genotype
3. Phenotype en Genotype

Put in the correct order,
from small to big.

1. cell - chromosome - DNA - gene
2. gene - chromosome - DNA - cell
3. gene - chromosome -cell - DNA
4. gene - DNA - chromosome - cell

Which one is correct?

1. Phenotype = genotype + environment
2. Environment = genotype + phenotype
3. Genotype = phenotype + environment