5.8 Dominant and recessive

Put them in the correct order from big to small.
Chromosome
Gene
Genome (biggest)
Nucleotide
nitrogenous base
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volgende
Slide 1: Sleepvraag
BiologieMiddelbare schoolhavo, vwoLeerjaar 4

In deze les zitten 15 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 90 min

Onderdelen in deze les

Put them in the correct order from big to small.
Chromosome
Gene
Genome (biggest)
Nucleotide
nitrogenous base

Slide 1 - Sleepvraag

Learning objectives
5.8.15 You can describe what homozygous, heterozygous, dominant and recessive mean.

Practical activity 3

You have learned that an allele pair can contain two identical or two different alleles for a certain hereditary characteristic. In a non-identical allele pair, the stronger allele is reflected in the phenotype.

Slide 2 - Tekstslide

Gene en allele
gene = piece of DNA that codes for 1 protein = 1 trait
  • chromosomes are in pairs and thus genes as well

allele = one of the variants of a gene

Slide 3 - Tekstslide

Homozygous: both alleles are the same



Heterozygoos:
the alleles are different

Slide 4 - Tekstslide




dominant allele: allele that is always expressed in the phenotype
  • A
recessive allele: allele that is only expressed in the phenotype if there is no dominant allele present
  • a

Slide 5 - Tekstslide

Slide 6 - Tekstslide

Carrier
Een heterozygous is a carrier of the recessive allele

hair colour or a disease

Slide 7 - Tekstslide

Juiste manier van noteren
AA = homozygous dominant
aa = homozygous recessive
Aa = heterozygous


Slide 8 - Tekstslide

2 equal alleles for a trait is what we call
A
Homozygous
B
Heterozygous
C
Dominant
D
Recessive

Slide 9 - Quizvraag

Which characteristic is expressed in a heterozygous individual?
A
the dominant one
B
the recessive one

Slide 10 - Quizvraag

Pjotr his gene code for hair is Aa. His hair is brown. Is the colour of his hair dominant or recessive?
A
Dominant
B
Recessive

Slide 11 - Quizvraag

Aa is also described as:
A
Homozygoot dominant
B
Heterozygoot
C
Homozygoot recessief
D
Heterozygoot dominant

Slide 12 - Quizvraag

Which description fits best at the question mark?
A
Chromosomepair
B
Allele pair
C
Gene pair
D
Both gene pair and allele pair

Slide 13 - Quizvraag

True or not true:
A chromosome is a gene
A
True
B
not true

Slide 14 - Quizvraag

What is a allele?
A
the variant of a gene
B
One of the genes of a gene pair

Slide 15 - Quizvraag