Science 9 RH

Science 9 RH

Introduction to Genetics

Mr. John Alvin U. Nillo, LPT

At the end of the module, you are expected to:

• explain why living organisms have similarities and differences with other organisms;

• describe the important role of DNA, chromosomes, and genes;

• manifest appreciation of one's unique characteristics by giving real-world scenarios.

Open Ended

What comes into your mind when you hear the word...

Genetics?

What is Genetics?

study of heredity and variation.

How do you describe this image?

What are the reasons?

Let's explain...

• DNA

• Chromosomes

• Genes

• Alleles

Multiple Choice

A molecule that contains the biological instructions that make each species unique.

• DNA

• Chromosomes

• Alleles

• Genes

Multiple Choice

Why is DNA important?

• it is the blueprints/ instructions for traits/ characteristics of all living things

• it is very small and very complicated

• without it the cell wouldn't have a nucleus

• it's in everything

DNA

Deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique.

www.genome.gov

Multiple Choice

Made up of DNA that carries all of the information used to help a cell grow, thrive, and reproduce.

• Chromosome

• Alleles

• Genes

• DNA

Multiple Choice

Where are chromosomes found in a cell?

• In the nucleus of the cell

• In the cell membrane of the cell.

• In the portion of the cell

• In the neutron of the cell

Chromosomes

Chromosomes are the things that make organisms what they are. They carry all of the information used to help a cell grow, thrive, and reproduce. Chromosomes are made up of DNA.

Chromosomes are made up of DNA. Segments of DNA in specific patterns are called genes.

Multiple Choice

A unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

• Trait

• Genes

• Alleles

• Heredity

Genes

a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

Multiple Choice

Any one of two or more genes that may occur alternatively at a given site on a chromosome. It may occur in pairs, or there may be multiple that affects the expression (phenotype) of a particular trait.

• Alleles

• Trait

• Heredity

Alleles

any one of two or more genes that may occur alternatively at a given site on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting the expression (phenotype) of a particular trait.