MP5 Heredity lesson 1 intro Mendelian Genetics

• Biologie
• Middelbare school
• havo
• Leerjaar 4

Unit: Heredity

Topic: Alleles, Mutations, Punnett squares

Lesson outline: 3 interactive video's about 5-8min each incl MCquestions.

Remainder of the time: HW (see last slide)

Aims:

- karyotype

- alleles

- mutations

- phenotype, genotype

- dominant recessive

- punnett squares

karyotype

https:

02:13

Get out your notebook!

Take notes while you watch this and the next video's.

Complete your glossary with the following terms:

dominant, recessive, allele, mutation, genetic cross, test-cross, autosomal chromosome, sex chromosome, genotype, phenotype, polygenic trait

02:41

you can ignore pleiotropic genes

03:00

FUNNY :)

03:28

fun detail, but please ignore

The key concept is: alleles are a version of a gene (example blue allele and brown allele, are different versions of the gene for eye color)

04:10

Add to your notes!

gametes are haploid (n)

somatic cells are diploid (2n)

04:34

ignore polyploidy

05:26

Convention rules in genetics:

USE CAPITAL LETTERS FOR DOMINANT ALLELES

and

lower case letters for recessive alleles

(Tip: avoid using non distinct letter like Ww or Ss rather use Hh)

06:37

define in your notes:

homozygous (HH or hh)

heterozygous (Hh)

genotype (for example GG)

phenotype (for example 'green eyes')

07:30

Why do they have 50% chance of getting wet ear wax?

1. 50% chance of inheriting W
2. 50% chance of inheriting w

07:30

Which genotype results in wet ear wax?

1. Ww
2. ww
3. WW
4. none

00:45

Recall

recent mutations to the COVID-19 virus in the news

00:52

How many codons code for the amino acid leucine?

1. 3
2. 4
3. 5
4. 6

02:03

Translation is

1. DNA-> mRNA
2. mRNA->protein

02:05

Brown eyes is the

1. phenotype
2. genotype

03:35

Fruitfly chromosomes: 2n=8

1. true
2. false

04:38

Non-disjunction #21

Trisomy-21 results in three chromosomes #21

the phenotype is known as Downsyndrome

(you only need to know this example, please ignore the other examples in this video)

Genome mutation (non-disjunction)

1. 'normal' female
2. 'normal' male
3. Down syndrome male
4. Down syndrome female

What I do not understand / questions I have about the content are:

What did you think of this lessonup?

1. useful
2. somewhat useful
3. very useful
4. did not learn anything

Homework for next lesson

RSQ BFY pg 247-252

Choose 4 questions from the following:

Q1-4,8 and 9 (pg262) and Q5&6 (pg 278)

Complete the handout page Biozone 206 (Alleles)

Time: 30min in class and 30min at home

Review the aims of this lesson and write down any questions you have on the next slide:

Aims:
- karyotype
- alleles
- mutations
- phenotype, genotype
- dominant recessive
- punnett squares

The end of the lesson

6 Top Learning Strategies

A= ask questions, explain, connect (elaborate)
N= no cramming (spaced practice)
S= switch topics (interleaving)
W= words and visuals (dual coding)
E= examples (real life examples)

R= recall what you know (retrieval practice)

(https://www.learningscientists.org/videos)

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