DNA and Genetics - Chapter 4

1 / 10
volgende
Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 3

In deze les zitten 10 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 45 min

Onderdelen in deze les

Slide 1 - Tekstslide

Slide 2 - Tekstslide

Monohybrid cross
Monohybrid cross = cross where you look at only one trait

The flowers cross. That means they are the parents, which we call the P-generation.

Both flowers are homozygous. White is recessive What are their genotypes?
And what is the genotype and the phenotype of the offspring?


Slide 3 - Tekstslide

Monohybrid cross
Monohybrid cross = cross where you look at only one trait

The flowers cross. That means they are the parents, which we call the P-generation.

Both flowers are homozygous. White is recessive What are their genotypes?
Red flower = BB         White flower = bb
And what is the genotype and phenotype of the offspring?
Genotype = Bb         Phenotype = red


Slide 4 - Tekstslide

Monohybrid cross
The F1 generation is the offspring for the P-generation.
The F2-generation is the offspring of the F1-generation.

Now, the F1 flowers will cross. Make a Punnett-square of this cross. What percentage of the F2 will be white?

25% will be white
A
a
A
AA
Aa
a
Aa
aa

Slide 5 - Tekstslide

Monohybrid cross
The F1 generation is the offspring for the P-generation.
The F2-generation is the offspring of the F1-generation.

Now, the F1 flowers will cross. Make a Punnett-square of this cross. What percentage of the F2 will be white?

Slide 6 - Tekstslide

Black fur(B) in guinea pigs is dominant over white fur(b). Find the probability of heterozygous offspring in the cross: BB x Bb.

Slide 7 - Open vraag

Black fur(B) in guinea pigs is dominant over white fur(b). Find the probability of a white offspring in a cross: Bb x bb

Slide 8 - Open vraag

A woman with blue eyes has a child with brown eyes. The allele for B brown eyes is dominant over the allele for blue eyes. What genotype(s) could the father have had?

Slide 9 - Open vraag

In cats, the gene for a spotted coat (R) is dominant over that for an unspotted coat (r). A female with spotted fur gives birth to a male with spotted fur. Among the young are animals with a spotted coat and animals with an unspotted coat. What are the genotypes of the parent animals?

Slide 10 - Open vraag