Sept. 29, 2020

Welcome to science class!

Tuesday, Sept. 29, 2020

I can distinguish between the nature of

the dominant and recessive alleles and

describe how the alleles are found in

human cells.

(The relationship of DNA to alleles)

Big Ideas ➢ Genetics is the study of DNA and the transfer of information from one

generation to the next.➢ DNA is the material located in the nucleus of a cell that codes for all of

the information the body will need to develop➢ Transcription is the process by which DNA is turned into RNA for the

purposes of replicating the material➢ A mutation may occur when DNA is translated incorrectly or in

exposure to some kind of mutagen.

ESSENTIAL QUESTIONS

1. How are traits passed from parents to offspring?

2. How can we determine the possible traits from a genetic cross of two organisms?

AGENDA✔ Vocabulary Review✔ Notes - slides and video✔ Quick Quiz in CHAT✔ BN-Genes with Quiz✔ On Your Own - Extra Credit

Genetics - DNA

Alleles•Variants (differences) in a gene

•Occurs on a fixed spot on a chromosome

•In humans an allele might indicate blood type, colorblindness, or many other traits.

Genetics

What does the allele indicate in this pair of

homologous chromosome?

Genetics

•Chromosomes are found in the nucleus of a cell and carry genes.

•Genes are segments of DNA on a chromosome and are responsible for inherited traits.

Deoxyribonucleic Acid - is the molecule that is present in all living cells and contains the information that determines traits that a living things inherit

DNA - “The Blueprint of Life” - found in the nucleus of a cell on the chromosomes.

DNA, Genes, Traits, and Alleles

What is DNA? 2 min

Nucleotide - consists of a sugar, a phosphate and a base. The sugar has 5 carbons.

All nucleotides are the same except for the base

DNA is made of subunits called Nucleotides

1. Adenine2. Thymine3. Guanine 4. Cytosine

The four nucleotides of DNA:

- Each nucleotide has a different shape- Each nucleotide base pairs up with

another

Adenine pairs with Thymine

Cytosine pairs with Guanine

Gene - Section of DNA that controls traits such as eye color, skin color, fur type and can influence personality and behaviors .

In Class Quiz

3

genetic

nucleotides phosphate

deoxyribose5

4 bases

guanine

thymine

1.

2. 3.

4. 5.

6. 7.

8.

9.

Follow along Quiz. You will need two pages open side by side.

https://docs.google.com/forms/d/e/1FAIpQLScaHlzE8vfRNILBsx2shsr1157Of_fKOwZzdi6ATeaLdlsGeA/viewform?usp=sf_link

On Your Own:

Handout - DNA Coloring

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