Genetics Why do organisms look or behave in certain ways? Why do kids look similar to their parents? https://www.youtube.com/watch?v=B_PQ8qYtUL0.

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Presentation transcript:

Genetics Why do organisms look or behave in certain ways? Why do kids look similar to their parents?

Traits Traits are a feature you inherit. Traits are passed from parents to offspring. Sexually reproduced organisms are a unique blend of both parent’s traits

Traits can be physical or behavioral. Physical traits in animals can include features such as wings, claws, fur, which may provide advantages for that organism, we call these adaptations.

Or the physical traits may just influence the appearance of an organism such as eye color, hair color, or right/left handedness.

Behavioral traits may include actions such as nest- building, swimming, or migrating. Human behavioral traits can include being diurnal, flinching, and the moro-reflex

Traits can be used for security to identify each unique person.

So how does each trait get passed from parents to form in an offspring? Your DNA provides the instructions for your types of traits.

Your body is made of trillions of cells, each one with a nucleus.

Inside each nucleus are 46 chromosomes.

You got 23 from mom, 23 from dad

Chromosomes are made of many genes

A gene is a long section of DNA (deoxyribonucleic acid) DNA

Put these in order, largest to smallest Answer: Cell Nucleus Chromosome Gene DNA

Label your picture

What is DNA and how does it work?

Ribosomes “read” the DNA and make proteins Proteins make up all the cells and structures of your body (fingernails, skin, muscles, etc.) Proteins also make enzymes which help chemical reactions, like digestion, occur in your body. 0DUhttps:// 0DU what are enzymes

Every inherited trait is controlled by one or more proteins

DNA and our genes are a code for making proteins which make our traits

Traits – including hair color and poor eyesight, are passed from generation to generation

Traits are passed from parents to offspring in different combinations each time.

Making you one of a kind!

Mascot Bracket 2016! Who has the winning traits? Make your group predictions and turn in your bracket by 1pm today! /2016-ncaa-tournament-mascot- deathbracket

What is a gene? Q Q