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5.2 what are the chances?
5. It runs in the family
5.2 What are chances?
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Biologie
Middelbare school
vwo
Leerjaar 3
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5. It runs in the family
5.2 What are chances?
Slide 1 - Diapositive
today''s program
Make exercises 5.1 workbook
Go to lessonup and use the lesson 5.2
Make notes in your notebook
Make exercises 5.2
Slide 2 - Diapositive
Learning objectives
learning objectives: you can
- explain the difference between autosomes and sex-chromomes, between somatic cells and sex cells (games
- explain how the gender of a baby is determined
- describes the diffences between the chromosomes of a sperm cell and an egg cel
Slide 3 - Diapositive
how did you inherit characteristics from your parents?
Slide 4 - Question ouverte
why do some inherited characteristics not show?
Slide 5 - Question ouverte
what are chromosomes and what do they contain?
Slide 6 - Question ouverte
why do siblings look similar to their parents and each other?
Slide 7 - Question ouverte
cells and chromosomes
humans have:
somatic cells
:
'body cells', 46 chromosomes, 23 pairs of chromosomes,
diploid cells
gametes
: 'sex cells' (egg cells, sperm cells), 23 single chromosomes,
haploid cells
Slide 8 - Diapositive
cells and chromosomes
humans have in EACH somatic cell:
22 pairs of
autosomes
1 pair of
sex chromosomes
: X X = female, XY=male
so, humans have in EACH gamete:
22
autosomes
1 sex
chromosome
Slide 9 - Diapositive
questions...
How many sex chromosomes are there to be found in a gamete?
What are the chances of having a baby girl of baby boy?
Who is ‘responsible’ for the gender of a baby: the mother, the father or both?
Slide 10 - Diapositive
huiswerk
learn par. 5.2
do exercises workbook 5.2
Slide 11 - Diapositive
questions...
How many sex chromosomes are there to be found in a gamete?
What are the chances of having a baby girl of baby boy?
Who is ‘responsible’ for the gender of a baby: the mother, the father or both?
Slide 12 - Diapositive
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