What are traits?
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Transcript of What are traits?
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WHAT ARE TRAITS?
•Physical Traits
• Can be seen by others
• Eye color, hair color, height, left handed
•Acquired Traits
• Learned skills
• Playing a sport, riding a bike, playing a musical instrument
•Behavioral Traits
• Instinctual actions
• Nest building and migration
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•Allele
• An allele is an alternative form of a gene that is located at a specific position on a specific chromosome.
• A,a,B,b ….
•Genotype
• The particular alleles (genes) an individual carries
• They are inherited from your biological parents
• Genes control your traits
• Example: Aa or aa
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•Phenotype
•An individual’s observable traits
•What people can SEE when they look at you
• Example: Curly hair
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•An individual with non-identical alleles of a gene is heterozygous for that gene• Examples: Bb, Tt, Aa
•An individual with identical alleles of a gene is homozygous for that gene• Examples: BB or bb, TT or tt
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•An allele is dominant if its effect masks the effect of a recessive allele paired with it•Capital letters (A) signify dominant alleles; lowercase letters (a) signify recessive alleles•Homozygous dominant (AA)•Homozygous recessive (aa)•Heterozygous (Aa)
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INHERITED TRAITS
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RIGHT (RR, RR) OR LEFT (RR) HANDED?
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FRECKLES (FF, FF) NO FRECKLES (FF)
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CURLY (HH, HH) OR STRAIGHT (HH)
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ACQUIRED TRAITS
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RIDING A BIKE
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READING
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WALKING