Download Gene: A part on the chromosomes that holds the information for a

genetics.notebook
May 26, 2016
Gene:
A part on the chromosomes that holds the information for a trait. Remember, you get one gene from your mother and one from your father.
Apr 5 ­ 9:39 AM
Each chromosome in the pair contains genes for the same biological features, such as eye color, at the same locations on the chromosome. However, each can contain either the same allele (e.g., both alleles for blue eyes) or different alleles (e.g., one allele for blue eyes and one allele for brown eyes) for each feature
Apr 10­10:04 PM
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genetics.notebook
May 26, 2016
DOMINANT:
When a DOMINANT gene is present, it is expressed.
Recessive:
Can only be expressed when there is no DOMINANT gene.
Apr 5 ­ 9:05 AM
Apr 10­10:17 PM
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genetics.notebook
Trait
Bent Pinky
May 26, 2016
Type
(Dominant)
Blue Eyes
(Recessive)
Mid­Digital Hair
(Dominant)
Tongue­rolling
(Dominant)
Thumb Crossing
Free Ear Lobes
Hitchhiker's Thumb
Number in class
(Dominant)
Dimples
Widow's Peak
Your Trait
(Recessive)
(Dominant)
(Dominant)
(Dominant)
Apr 5 ­ 9:22 AM
http://tami­port.suite101.com/dominant­human­genetic­traits­a38351
Apr 10­10:21 PM
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genetics.notebook
May 26, 2016
Apr 10­10:40 PM
Heterozygous Pair: (Hh)
A DOMINANT and Recessive gene.
Homozygous: (HH) or (hh)
Either two DOMINANT genes or two recessive genes.
Apr 5 ­ 9:32 AM
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genetics.notebook
May 26, 2016
Genes and Heredity Have you ever been able to identify a stranger as a member of a particular family ? Red hair, high cheekbones, or a prominent nose can often be traced through family lineages. The observation that a young child resembles her grandmother suggest that physical characteristics are inherited. Similar observation can be made in the world of plants and animals.
ie. Flowers with white petals usually produce offsprings with whit petals
May 7­11:16 PM
May 11­8:04 AM
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genetics.notebook
May 26, 2016
Genes and Heredity Characteristics appear to be repeated from generation to generation. Heredity ­ the passing of traits from parents to offspring .
May 7­11:24 PM
How is it possible for two parents with black hair to have a child with red hair?
Since you inherited half of your chromosomes from your mother and the other half from your father, your traits are a result of interactions of genes of both parents. May 7­11:18 PM
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genetics.notebook
May 26, 2016
May 8­12:01 AM
Heterozygous Pair: (Hh)
A DOMINANT and Recessive gene.
Homozygous: (HH) or (hh)
Either two DOMINANT genes or two recessive genes.
Apr 5 ­ 9:32 AM
7
genetics.notebook
May 26, 2016
Widow's Peak
Mom (Heterozygous)
Dad
(Heterozygous)
Apr 7 ­ 2:19 PM
Apr 12­8:36 AM
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genetics.notebook
May 26, 2016
Widow's Peak
Mom (Homozygous dominant)
Dad
(Heterozygous)
Apr 7 ­ 2:19 PM
Widow's Peak
Mom (Homozygous recessive)
Dad
(Heterozygous)
Apr 7 ­ 2:19 PM
9
genetics.notebook
May 26, 2016
Widow's Peak
Mom (Homozygous recessive)
Dad
(homozygous recessive)
Apr 7 ­ 2:19 PM
Mom
Dad
Apr 7 ­ 2:19 PM
10
genetics.notebook
May 26, 2016
Mom
Dad
Apr 7 ­ 2:19 PM
Mom
Dad
Apr 7 ­ 2:19 PM
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genetics.notebook
May 26, 2016
Apr 25 ­ 8:41 AM
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