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Genetic terms.

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Presentation on theme: "Genetic terms."— Presentation transcript:

1 Genetic terms

2 Phenotypes Phen= to show or bring to light
It’s the phenotype is what shows Like eye color, hair color, hair texture Genotype determines the phenotype

3 Recesive The non-dominate
Both need to be recessive to show the phenotype Like blonde hair, normal height Example: ss, hh Sickle cell, hemophilia are recessive Recessive does not mean rare (six fingers is a dominate trait) also called polydactyl

4 Genotype Genetic make up of an organism
There are three possible genotype

5 Dominate Dominate trait is the one that shows more
It can show if there is a Aa or AA Only need one allele to make it dominate Dwarfism and Huntington's disease Dark hair and eyes

6 Alleles There are two alleles for each trait
They code for a genetic trait They can be dominate or recesive

7 Centromeres Centromeres are used by the spindle fiber to pull the sister chromatids towards the opposite pole

8 Chromatid Chromatid is one strand of the divided chromosome

9 Mutation Is a change in DNA Mistakes when DNA is copied
Cuts the DNA in section

10 Pedigree Used to look at the pattern of a disease in a pattern
Can track genetic diseases and show the probability of a child getting it Genetic counselors use them

11 Gene Humans have 20,000 to 30,000 genes. Genes make you who you are

12 Homologous Means same proportion.
Are the ones from mom and the one from dad

13 Telemore A region of nucleotide sequences at each end of a chromatid.
It protects the end of chromosome and protects it from deterioration


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