Essential Interactive Image
Laura Thompson
Created on February 4, 2024
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Transcript
My Future Child
Analysis
Trait Description
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Immediate FamilyHitchhiker's Thumb Pedigree
MY FUTURE CHILD
For this example, I'll say I'm Homozygeous Dominant
If my husband can not bend his thumb back...
If my husband can move his thumb back...
Next
Back
MY FUTURE CHILD PT. 2
For this example, I am heterozygous
Back
Tommy Thompson
Grandfather
Possible Genotypes:Homozygous Dominant (SS)or Heterozygous (Ss)
Phenotype:Hitchhikers Thumb
Yolanda Thompson
Grandmother
Genotype:Homozygous Recessive (ss)Phenotype:Straight thumb
Yolande Hanono
Aunt
Genotype:Heterozygous (Ss)Her daughter does not have one which means she is heterozygousPhenotype:Hitchhikers Thumb
Tommy Thompson
Father
Possible Genotype:Homozygous Dominant (SS)orHeterozygous (Ss)Phenotype:Hitchhikers Thumb
Sheri Hall
Mother
Possible Genotype:Homozygous Dominant (SS)or Heterozygous (Ss)Phenotype:Hitchhikers Thumb
Herold Henderson
Grandfather
Possible Genotype:Homozygous Dominant (SS)or Heterozygous (Ss)Phenotype:Hitchhikers Thumb
Suzanne Land
Grandmother
Possible Genotype:Homozygous Domiant (SS)orHeterozygous (Ss)Phenotype:Hitchhikers Thumb
Debbie Henderson
Aunt
Possible Genotype:Homozygous Dominant (SS)orHeterozygous (Ss)Phenotype:Hitchikers Thumb
Brian Henderson
Uncle
Possible Genotype:Homozygous Dominant (SS)or Heterozygous Phenotype:Hitchhikers Thumb
Tommy Thompson
Brother
Possible Genotype:Homozygous Dominant (SS)or Heterozygous (Ss)Phenotype:Hitchhikers Thumb
Laura Thompson
Me!
Possible Genotype:Homozygous Dominant (SS)orHeterozygous (Ss)Phenotype:Hitchhikers Thumb
Hitchhikers thumb is a genetic trait related to the flexibility of the thumb joint. Some have a straight thumb while others can bend their thumb back at the joint. This gene is controlled by a single gene with two alleles. The dominant allele gives you a straight thumb, while the recessive allele allows you to move it back. For genotypes, there can be either homozygous dominant (SS) where both alleles are dominant and result in a straight thumb, Heterozygous (Ss) still leading to the straight thumb because of the dominant allele, or you could have homozygous recessive (ss) where both alleles are recessive leading to a hitchhikers thumb. The two phenotypes are straight thumb (through homozygous dominant or heterozygous) or hitchhikers thumb from homozygous recessive. As for the traits inheritance pattern, it follows Mendelian autosomal. Autosomal refers to the chromosomes that don’t determine an individuals sex. Genetic modifiers or environmental factors could play a role in this trait as well. I chose this trait because I did not even know that some people could not move their thumb back like I could. This fascinated me and I wanted to see who else could do it in my family.
Almost my entire family had the trait. This means that almost all my family is either homozygous dominant or heterozygous. It is more likely that we are homozygous dominant than all heterozygous because atleast one of us would have been recessive.I got the trait from my mom and my dad. This gene is autosomal so it gets passed on through chromosomes. My cousin for example, her mom had the trait but she didn't this means that my aunt has to be heterozygous and got the none dominant allele from my grandma. This also means my cousins dad has to either be homozygous recessive or heterozygous aswell.