Friday’s fun fact! Temperature can have an affect on how a gene is expressed. Siamese cats have a...
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Transcript of Friday’s fun fact! Temperature can have an affect on how a gene is expressed. Siamese cats have a...
![Page 1: Friday’s fun fact! Temperature can have an affect on how a gene is expressed. Siamese cats have a gene that codes for darker pigments - this gene.](https://reader036.fdocuments.us/reader036/viewer/2022062520/5697bfa31a28abf838c96bed/html5/thumbnails/1.jpg)
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Friday’s fun fact!
• Temperature can have an affect on how a gene is expressed.
• Siamese cats have a gene that codes for darker pigments - this gene is more active at low temperatures. Parts of the body that are colder will develop the darker pigmentation - ears, feet tail of the Siamese cats.
![Page 5: Friday’s fun fact! Temperature can have an affect on how a gene is expressed. Siamese cats have a gene that codes for darker pigments - this gene.](https://reader036.fdocuments.us/reader036/viewer/2022062520/5697bfa31a28abf838c96bed/html5/thumbnails/5.jpg)
How are these two things similar?
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To understand their inheritance patterns, we need to learn some new concepts beyond Mendel’s
laws.
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Incomplete Dominance
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Codominance
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Multiple Alleles
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Different blood types
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Did you know?
• In a Labrador Retriever, coat color is determined by one gene with four different alleles. Five different colors result from the combinations of these alleles.
• Even if more than two alleles exist in a population, any given individual can have no more than two of them: one from the mother and one from the father.
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End of the ppt.
• Your homework over the weekend is
• p. 68 #7, 14
• p. 69 #28, 31
Have a wonderful weekend!
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Sex-linked Genes
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What do these…
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Is that enough?
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http://ib.berkeley.edu/courses/ib162/Week2a.htm
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http://sciencenotes.wordpress.com/2007/11/26/sandwalk-on-calico-cats/
http://www.google.ca/imgres?imgurl=http://img.thesun.co.uk/multimedia/archive/00875/SNN2730CATT_682_875773a.jpg&imgrefurl=http://www.thesun.co.uk/sol/homepage/news/2609076/Miracle-of-male-cat-in-a-girls-fur.html%3Fprint%3Dyes&usg=__QhJwXhOY4CVGgwt05Ua6ZdQjNGU=&h=450&w=682&sz=85&hl=en&start=0&zoom=1&tbnid=-6HdOuOb79Ur1M:&tbnh=154&tbnw=226&ei=ThBwTb_8M4iBOuCh-b8G&prev=/images%3Fq%3Dmale%2Btortoiseshell%2Bcat%26hl%3Den%26biw%3D1276%26bih%3D627%26gbv%3D2%26tbs%3Disch:1&itbs=1&iact=hc&vpx=324&vpy=263&dur=1950&hovh=182&hovw=276&tx=155&ty=115&oei=ThBwTb_8M4iBOuCh-b8G&page=1&ndsp=17&ved=1t:429,r:7,s:0