Genetics lesson 2 DNA

Repetition from last time
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Slide 1: Slide
BiologieMiddelbare schoolvwoLeerjaar 3

This lesson contains 21 slides, with interactive quizzes and text slides.

Items in this lesson

Repetition from last time

Slide 1 - Slide

How does DNA act as a blueprint for life?
A
By making proteins
B
By making carbohydrates
C
By making new cells
D
By making amino acids

Slide 2 - Quiz

Each human being has 46 chromosomes. How many did you get from your mother?
A
46
B
23
C
22
D
45

Slide 3 - Quiz

genotype
phenotype
XY chromosomes
cannot change!
you inherit this
can sometimes change during your life
you do not inherit this
a scar
Is not always visible

Slide 4 - Drag question

Identical twins do have the same genotype but not necessarily the same phenotype
A
true
B
false

Slide 5 - Quiz

Put in the correct order
A
cell - chromosome - DNA - gene
B
gene - chromosome - DNA - cell
C
gene - chromosome -cell - DNA
D
gene - DNA - chromosome - cell

Slide 6 - Quiz

Zet de juiste omschrijving bij het juiste begrip.
chromosome
gene
allele
thread of DNA with hereditary information
part of a chromosome with the information of 1 characteristic
gene variant, the information in a gene

Slide 7 - Drag question

What is the difference between genotype and phenotype?
A
The phenotype is all of the DNA in your cells. The genotype are all of your visible traits
B
The genotype are all the different cells. The fenotype are alle the different genes.
C
The phenotype are all the different cells. The genotype are all the different genes.
D
The genotype is the total amount of DNA in your cells. The fenotype are all the visible traits.

Slide 8 - Quiz

Genetics lesson 2 DNA

Slide 9 - Slide

Learning objectives
- You can describe what genes and alleles are.
-  You can describe what a mutation is.
- You can describe the structure of DNA



Slide 10 - Slide

Chromosomes
= 1 long DNA molecule rolled up in between proteins 



46 chromosomes in every nucleus



Slide 11 - Slide

Karyotype
  • 46 chromosomes
  • 23 pairs of chromosomes
  • 1 pair = 2 similar chromosomes of the same length, shape and with the same information
  • 44  normal chromosomes 
  • 2 sex chromosomes

Slide 12 - Slide

Gene
A piece of DNA that contains the code for a one characteristic is what we call a gene.

gene = een deel van een chromosoom dat de informatie bevat van één of meer erfelijke eigenschappen)

Slide 13 - Slide

Slide 14 - Slide

 A piece of DNA showing the base pairs

Slide 15 - Slide

Slide 16 - Slide

DNA has 4 building blocks

Nucleotides: 
ATCG (nitrogenous base)
Phosfategroup
Desoxyribose (sugargroep)

Slide 17 - Slide

How many chromosome pairs do most people have in their cells?
A
22
B
23
C
44
D
46

Slide 18 - Quiz

How much hereditary material does a sex cell have compared to a normal body cell?
A
Same
B
1/2
C
1/4
D
twice the amount

Slide 19 - Quiz

A piece of DNA has the following sequence:
TGCAAA
What is the sequence of the opposite strad?
A
ACGTTT
B
TTTGCA
C
TGCAAA
D
AAACGT

Slide 20 - Quiz

Make excercises from chapter 5.2

Slide 21 - Slide