5.1 pass it on!

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

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

what is the difference between genotype and fenotype? write in your own words.

genotype

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

fenotype

inherited 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?

- read page 123 (below the blue part)

- explain in your own words 

homework

study 5.1 do the matching assignments in the workbook

write down difficult words!

READ PAGE 124 AND 125 CAREFULLY AS WELL! see if you understand it's very interesting stuff :-)