5.1 pass it on!

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Chapter 5

 

It runs in 

the family

5.1 pass it on!

new chapter it runs in the family

- inheriting characteristics from parents

- how gender is determined

- how chomosomes, DNA and genes are related

- how to determine characteristics of offspring from a given combination of parents

- how to read a pedigree

It runs in the family

genotype

fenotype

genotype

complete set of inherited chracteristics (genes/alleles, will get to that later ;-))

fenotype

Characteristics that are actually expressed (which show, which could also be 'inside' like a disease or a fast metabolism)

fenotype = genotype + environmental factors

Wat is genotype or fenotype? move traits A till H to genotype or fenotype. 

Genotype

Fenotype

a small nose

straight hair from birth

Piercings 

painted dark hair

a scar

Wibi can play the piano very well

calluses on your hands

blue eyes

karyotype

- picture of all your 46 chromosomes

- 23 homologous pairs (1 from dad and 1 from mum)

- 22 pairs of autosomal chromosomes

- 1 pair of sex chromosomes XX or XY

so why do siblings differ?

homework

study 5.1 do exercises 1, 2, 3, 4 and 5

15 minutes