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Slide 1: Tekstslide
BiologieMiddelbare schoolhavo, vwoLeerjaar 3

In deze les zitten 22 slides, met tekstslides.

time-iconLesduur is: 45 min

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HAVE READY
  • JOIN THIS LESSONUP
  • YOUR NOTEBOOK
  • KERBOODLE PAGE 256
  • GOOGLE CLASROOM

Slide 1 - Tekstslide

CATCH UP -Reebob lesson
See Magister:
  • Location: ROOM 015

  • Monday 11 apr 16:00 - 16:45

Slide 2 - Tekstslide

CHAPTER 16
INHERITANCE

Slide 3 - Tekstslide

  • I know what selective breeding is and how it is used to benefit humans.
  • I know what genetic engineering is and can name and explain various examples.
  • I know what transgenesis is and can name and explain various examples.
  • I know what CRISPR is and can name and explain various examples.


  • SELECTIVE BREEDING
  • GENETIC ENGINEERING
  • GENE THERAPY
  • TRANSGENESIS
  • CRISPR

Slide 4 - Tekstslide

QUIZ LESSON 1-5
INHERITANCE

Slide 5 - Tekstslide

IDENTICAL TWINS
Figure 1 shows a picture of Dresie and Casie from West-Transvaal, South-Afrika: white identical twins. Two claims are made about these twins:


1. the difference between the ears of Dresie and Casie was already present at birth, therefore this difference is part of the genotype 
2. these twins have the same blood type. 
 
1. Explain which claim or which claims are true?


Slide 6 - Tekstslide

IDENTICAL TWINS
1. Explain which claim or which claims are true?

Since Dresie and Casie are identical twins their genotype is identical, therefore the difference between the ears cannot be genetic (1p)  (maybe due to birth) and their blood type has to be identical (1p). Therefor, claim 2 is correct. 

Slide 7 - Tekstslide

IDENTICAL TWINS
Tongue rolling
People who are capable of rolling their tongue (see figure 2) possess allele R. A person who can’t roll his tongue (rr) has two sisters who can roll their tongue. Both parents are also capable of rolling their tongue. 

2 What are the possible genotypes of both the parents and 
T2 the sisters?



Slide 8 - Tekstslide

Steps with Punnet Squares
  1. Identify your alleles.
  2. Identify genotype parent 1. Show possible gametes.
  3. Identify genotype parent 2. Show possible gametes.
  4. Fill in your punnet squares.
  5. Write down ratios of the possible genotypes.
  6. Write down ratios of the possible phenotypes.

Slide 9 - Tekstslide

IDENTICAL TWINS
2 What are the possible genotypes of both the parents and 
T2 the sisters?


Slide 10 - Tekstslide

LABRADORS
Snout colour of Labradors
A certain gene determines the snout colour of Labrador dogs. This gene can cause the snout to be black or brown coloured. A male dog homozygous for brown snout colour copulates with five homozygous black female dogs. All puppy’s which are born (F1) from these crossings are interbred. From this interbreeding many puppies are born (F2). Determine the chance for a puppy in F2 to have a brown snout. 

3 Determine the probability for a puppy in F2 to have a brown snout. (Remember to use and show your 6 steps!)



Slide 11 - Tekstslide

Steps with Punnet Squares
  1. Identify your alleles.
  2. Identify genotype parent 1. Show possible gametes.
  3. Identify genotype parent 2. Show possible gametes.
  4. Fill in your punnet squares.
  5. Write down ratios of the possible genotypes.
  6. Write down ratios of the possible phenotypes.

Slide 12 - Tekstslide

LABRADORS
3 Determine the probability for a puppy in F2 to have a brown snout. (Remember to use and show your 6 steps!)



Slide 13 - Tekstslide

CANARIES
Canaries can carry an allele which is inherited X-chromosomal recessive. Embryos without an allele E die before being born. In these canaries, unlike in humans, males have two X chromosomes and females have one X and one Y. A female canary mates with a homozygous canary male.
  
5. Determine the change that the first male canary chick is heterozygous for this
I trade.

Slide 14 - Tekstslide

Steps with Punnet Squares
  1. Identify your alleles.
  2. Identify genotype parent 1. Show possible gametes.
  3. Identify genotype parent 2. Show possible gametes.
  4. Fill in your punnet squares.
  5. Write down ratios of the possible genotypes.
  6. Write down ratios of the possible phenotypes.

Slide 15 - Tekstslide

CANARIES
4 Determine the chance that the first male canary chick is heterozygous for this characteristic. (Remember to use and show your 6 steps!)


Slide 16 - Tekstslide

ALBINOS
In animals, a rare disease called albinism results in the absence of pigment in cells. This leads to a specific phenotype where the organism lacks fur or skin colour. In humans the allele for albinism is recessive and linked to the X-chromosome (Xa). An albino male and a female heterozygous for this allele are getting children. 
 Determine the chance that their first born is an albino girl.
( 6 steps!)

Slide 17 - Tekstslide

Steps with Punnet Squares
  1. Identify your alleles.
  2. Identify genotype parent 1. Show possible gametes.
  3. Identify genotype parent 2. Show possible gametes.
  4. Fill in your punnet squares.
  5. Write down ratios of the possible genotypes.
  6. Write down ratios of the possible phenotypes.

Slide 18 - Tekstslide

ALBINOS
Determine the chance that their first born is an albino girl.


Slide 19 - Tekstslide

SEX CHROMOSOMES
Which of the following statements on sex chromosomes is correct? 
(Just choose a letter, no explanation required!)

 A Sex chromosomes are only present in egg and sperm cells.
B All chromosomes in egg and sperm cells are sex chromosomes.
C Sex chromosomes are present in all cells.


Slide 20 - Tekstslide

SEX CHROMOSOMES
Which of the following statements on sex chromosomes is correct? 
(Just choose a letter, no explanation required!)

 A Sex chromosomes are only present in egg and sperm cells.
B All chromosomes in egg and sperm cells are sex chromosomes.
C Sex chromosomes are present in all cells.


Slide 21 - Tekstslide

HOMEWORK FOR LESSON 9:
  • COMPLETE THE LESSONUP HW9
  • WRITE A SHORT SUMMARY OF THE KEYWORDS COVERED TILL NOW

Slide 22 - Tekstslide