Is this normal? Genetics?

Question

I am a male and i look nothing like my dad the only similar thing we have alike is eye color his eyes are dark brown mine are light brown. Yet my brother looks like him a lot but not that much like my mom. But i look a lot like my mom even though her eyes are blue. I know for sure that my dad is my real dad so is it possible that his genes were weak while i was being made?

Answer 1

Helpless in Bio - no offense, but you should re-study your genetics chapter. You inherit 50% of your nuclear genes from your mother, and 50% from your father. You are their direct descendant, and the two gametes that made you each carried 1/2 of your nuclear genetic material.

You may be confused because the % you share with your sibling is an estimate - on average, sibling pairs share 50% of their genes, but the exact amount for any one pair of siblings may vary (theoretically from 0 to 100% genes shared).

Answer 2

Look up "genetic recombination".  It will explain variation in offspring.  Different recombination sites are in play during each gamete cell formation. That is why no two individuals are alike (with the exception of twins in which conception has already taken place prior to the twin cells "splitting").

Also, look up the term "milk-man"

Just kidding.  I don't look like my Dad either.

Answer 3

You do not inherit all the characteristics of one parent. And there is nothing such as strong and weak genes, please remove that misconception. They are dominant, or recessive. As you know, gametes fertilize each other and there can be many possibilities.

Eye colour- it is due to polygenic inheritance, that is due to many genes, and it might be possible that brown eye colour genes outnumbered your blue eye genes, and they were lesser in number than the number of brown eye colour genes your dad has. Your brother might have just by chance got more of your dad's characterisitcs. it was genetically impossible, you won't be existing.

Answer 4

the reason you probably dont look like your dad but your mum is because he has genetics for the colour hair your mum has and other genes from his grandparents that got passed into his gene pool but not his features but got passed onto you so you got the dominant features that you mom has because your dad aslo has that type of gene such as light eyes or light/dark hair

Answer 5

It's not so much that your genes were weak while being made, it's just that you probably got more dominant genes form your mother, and your brother got the dominant genes from your father.  so basically, you share half of your genes with your father, and half of your genes with your father.  Both of your parents have the same genes that code out into certain body parts and traits, but some of them are dominant over other genes that are recessive, meaning that the dominant gene will "cover up" the recessive gene, making only the dominant show up as the trait.  For example, with ear lobes, there are two different traits, either you have attached ear lobes, or free hanging ones (i'll put a link that explains this better and shows pictures).  now if you receive a gene from your mom that would give you free hanging lobes, and a trait from your dad that would give you attached lobes, then you would end up with free hanging lobes because that is dominant over the attached.

anyway, what that long explanation is trying to say is that you, by random chance, probably got more dominant traits from your mom, leading you to look more like her, while your brother randomly had the opposite happen and get more of your dad's dominant traits.

anyway, sorry if i rambled or was confusing, but i hope this helps!

Answer 6

Its not about genes being weak or strong at any certain point in time.  all of the characteristics are in the gene pool and it is simply probability who you end up looking like, and what other traits you get.  And visible traits arent the only traits that there are out there.  You could have inherited a tendancy to a certain illness, or other things like that from your father.

Answer 7

your moms genes could have a stronger effect on you than your dad's do

Answer 8

The genes that you inherit from your parents are completely random.  It is possible that you look more like you mom and your brother more like your father, it just depends on the selection of genes that you got.  And because you look more like one parent doesn't mean you got more of one parents' genes than the other. Everyone cares two sets of every gene, one from each parent, and depending on several different factors, not just a gene being dominant or recessive, can determine how that trait is characterized in you.

Answer 9

You can have 99+% of your mothers genes and the rest of your fathers.  Your bother has more of your fathers genes then your mother.  If there are/is more children they  each have the same 50/50 change of looking like either parent.  It could be that each child might have a trait of one parent where the other children do not.  I hope this helps.  My brother looks like my father, my sister like my mother and people say I look like my brother and others say I look like my sister.  I am the youngest.  I can see traits of both my parents in me.  If you look at my son he looks pretty much like my father.  To answer you question yes this is normal and genetics, more genetics.

Answer 10

for eye color, brown is the dominant trait and blue is the recessive trait. there was a 75% chance that your eyes would be brown and a 25% chance that they would be blue. since you look like your mom, i bet most of her traits are dominant and that your dad's are recessive. since your brother looks more like your dad, he probably got the 25% for the other traits.

Answer 11

your fathers trait must of been recessive and your mom was dominant.