This lesson contains 23 slide, with interactive quiz and text slide.
Items in this lesson
5.3 DNA and genes
Slide 1 - Slide
DNA
Slide 2 - Slide
DO YOU REMEMBER?
Slide 3 - Slide
nucleotides (base of DNA)
Slide 4 - Slide
4 different bases (nucleotides)
cytosine
guanine
adenine
thymine
Slide 5 - Slide
Slide 6 - Slide
double helix (ladder)
Slide 7 - Slide
information is stored in code
AATCCGGACGAATTCCGGAAAAAATTTTTTTTTTTTTTTTTTCGCGCGAATTCATATATATCGGACGGACGAAC etc etc etc it would be a very thick book :-)
Slide 8 - Slide
GENE: section of DNA with complete code for a protein
Slide 9 - Slide
proteins
Lots of functions
E.g. enzymes, hormones, antibodies, cell structure
gene = code for 1 protein
Genes determine your characteristics
Slide 10 - Slide
copying
you start with one fertilised egg with 46 chromosomes...
you end up with billions of cells with the same 46 chromosomes => all of them a copy from the original.....
things can go wrong on the way => mutations (5.5)
Slide 11 - Slide
from DNA code to proteins
3 bases = 1 amino acid
ACC is code for one type
AAG is code for another
21 different amino acids.
string of amino acids = protein
Slide 12 - Slide
amino acids -> protein
Slide 13 - Slide
The molecule shown in the picture is called ...
A
DNA
B
single stranded DNA
C
an amino acid
D
a ribosome
Slide 14 - Quiz
This is a picture of ..
A
chromosome
B
gene
C
DNA
D
cell
Slide 15 - Quiz
Below are a few codes with 4 letters. Which of these codes show a piece ofDNA?
A
ABCDBDCA
B
CAEFEAFC
C
GACTATGC
D
TACDDTAC
Slide 16 - Quiz
What do you call the part of a chromosome that carries the information for 1 heriditary trait?
A
DNA
B
a gene
C
a mother cell
D
an egg cell
Slide 17 - Quiz
Does the information for hereditary traits change when a cell is copied?
A
yes
B
no
Slide 18 - Quiz
this is a picture of ........
A
cell
B
chromosome
C
DNA
D
gene
Slide 19 - Quiz
How many chromosome pairs does Chamaecrista fasciculata have?
(see picture)
A
8
B
3
C
16
D
20
Slide 20 - Quiz
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
Slide 21 - Drag question
A fruit fly has short wings and cannot fly. This is because of a mutation in chromosome number 2. Are the short wings part of the fly's genotype? And phenotype?