genetics 101 welcome to everything you wanted to know about genetics!
TRANSCRIPT
![Page 1: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/1.jpg)
Genetics 101Welcome to everything you wanted to know about Genetics!
![Page 2: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/2.jpg)
Genetics… is the study of genes, heredity, and
variation among living organisms. It is studied through biology.
![Page 3: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/3.jpg)
Remember… Traits vary in a population…this is
the key to species survival!
Offspring resemble their parents and this is from the passing of genetic information.
![Page 4: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/4.jpg)
Inheritance Passing genetic information from
one generation to the next. Offspring inherit alleles from their parents.
![Page 5: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/5.jpg)
Gregor Mendel Conducted pioneering work with inheritance.
Most important work was done with pea plants…he studied the trait of flower color.
He realized that plants did not combine colors (i.e. purple + white did not give a pale lavender color, but the plant was either white or purple). Why?
The answer…genes!
![Page 6: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/6.jpg)
![Page 7: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/7.jpg)
Animal Cell Every living thing is made of cells. Cells have organelles and one organelle
is the nucleus (center part of a cell). Inside the nucleus is DNA. DNA = an inheritance messenger; a
huge molecule containing millions of atoms; DNA is coiled into chromosomes in the nucleus
Chromosomes = structures that carry the message of inheritance
![Page 8: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/8.jpg)
![Page 9: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/9.jpg)
![Page 10: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/10.jpg)
![Page 11: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/11.jpg)
Alleles allele = specific active location on a
chromosome
![Page 12: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/12.jpg)
Genes Gene = two alleles on the paired
chromosome working together; a pair of alleles!
![Page 13: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/13.jpg)
Big Ideas! 1. Nuclei contain chromosomes. 2. Chromosomes come in almost
identical pairs. 3. Chromosomes have specific active
locations called alleles. 4. The two alleles in identical locations
on paired chromosomes constitute a gene.
5. A gene (two alleles working together) controls a trait.
![Page 14: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/14.jpg)
Genotype Genotype = combination of alleles
in an organism’s chromosomes
AA, Aa, or aa, are all genotypes.
![Page 15: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/15.jpg)
Phenotype Phenotype = what trait is
expressed in an organism
It’s what they look like!
The traits that the genotype produce is the organism’s phenotype!
![Page 16: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/16.jpg)
Dominant Dominant Alleles = more influential
alleles; represented by an uppercase letter
AA or Aa
![Page 17: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/17.jpg)
Recessive Recessive Alleles = less influential
alleles; represented by a lowercase letter
Aa or aa
Examples: blonde or red hair, blue or green eyes
![Page 18: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/18.jpg)
Reading Assignment! With another person at your table
group, you will: Partner read pages 46 through 55. Under each green heading, you will
write down 2-3 things you learned in your Science Notebook!
![Page 19: Genetics 101 Welcome to everything you wanted to know about Genetics!](https://reader036.vdocument.in/reader036/viewer/2022070400/56649f145503460f94c2965c/html5/thumbnails/19.jpg)
From Genotype to Phenotype! Decode the genotype to produce
the Larkey’s phenotype!