Inheritance, meiosis and genetic disorders

Info

X and Y

23 and 46

INHERITANCE, MEIOSIS AND GENETIC DISORDERS

INDEX

HUMAN CHROMOSOMES

PREVIOUS KNOWLEDGE

MEIOSIS

PURPOSE

NON-DISJUNCTION

KEY WORDS

OBJECTIVES

• Understand the legal and ethical implications of the current knowledge regarding human genome.

• Understand that human traits are passed on largely through dominant and recessive alleles, although some alleles other patterns, including those stored in sex chromosomes.

• Explain with a pedigree chart how genetic disorders, that can be caused during meiosis, can be inherited.

OBJECTIVES

Understand...

• the chances of inheriting a particular disease that runs in the family.
• some of the causes for spontaneous aborption.
• the reason behind genetic disorders and if they can be prevented.

PURPOSE

• DNA structure and role

• Cell Structure and Organelles

• Patterns of inheritance

• Mitosis

• Chromosome structure

Previous knowledge

SEX CHROMOSOME

MEIOSIS

HOMOLOGOUS CHROMOSOME

NON-DISJUNCTION

DIPLOID

AUTOSOME

HAPLOID

SEX-LINKED GENE

For each vocabulary word, create 2 sentences and use the materials you have at hand to model them.

GENOME

GENETIC TESTING

PEDIGREE

TETRAD

KARYOTYPE

CROSSING OVER

KEY WORDS

MEIOSIS AND SEXUAL REPRODUCTION

Watch the video on Meiosis or follow the presentation (click here)

Meiosis

• Model the meiosis stages.

• Complete the worksheet provided.

ACTIVITY TIME

ACTIVITY TIME

Complete the concept map activities on:

• Cell division and
• meiosis vs mitosis.

Human chromosomes

GENETIC DIVERSITY

Choose your favorite animal from the list! Remember the number of chromosomes.

Watch the video and amaze yourself on how different the organisms can be!

Read the definition on karyotypes (LINK)

KARYOTYPE

In your notebook:

• List and define the words you do not understand.
• For your chosen animal, draw their karyotype, and identify their haploid and diploid number.
• In the notebook, differentiate between autosome, sex chromosome and X/Y chromosomes.

non-disjunction and its consequences

Read the excerpt on Nondisjunction and the consequences it can have in the future generations.

non disjunction and genetic syndromes?

-Mehmet Oz

genetics load the gun and lifestyle pulls the trigger.