What genetics are inherited by the father?

Answer 1

~uh... the father cannot inherit any genes, unless it's from his parents...but if you want to know what a father passes down to an offspring, I have that answer = Females are rarely affected by sex-linked traits because ______.? = a. female have one X chromosome

b. X-inactivation in males

c. X-inactivation in females

d. X chromosomes in males generally have more mutations than X chromosomes in females

e. mutations on the X chromosome are not passed down to females, but are always passed down to males

Males are an "X" & a "Y" so I have no idea. I do know that Parkinson's Disease is passed from mother to son. My husband is concerned about that.

*

Female is XX and Male is XY

If the female is to suffer from a sex linked disease, she has to pick it up from the father's X chromosome. If the disease is "recessive", then it is masked over by the Mother's X chromosome that she passed down to the daughter. If the disease is on the father's X chromosome and is dominate in nature, that's a little different situation. The mother's X chromosome may carry a dominate allele for that same chromosomal location which may or may not mask over the diseased gene. In any case, it is the mother's X chromosome handed down to the daughter that reduces the likelihood of her experiencing a sex linked disease.

The answer would d.)

a.) almost seems right but females are XX not X0, generally. Though, after X chromosome inactivation, the female does have only one X chromosome, but ... she also has the X chromosome from the father. So, she does have XX chromosomes. d.) is your answer.

See: Sex Linkage

http:/en.wikipedia.org/wiki/Sex_linkage

*

Answer is probably C.

A female is XX, but during development of the zygote, one of the X chromosomes is randomly turned off. This process is referred to as X-inactivation. If the sex linked trait is on the off X chromosome, then the female will not be affected.

The answer is not D because the X chromosome carried by females that is "off" accumulates more mutations than the one in males since there is still one good copy of the chromosome left. The answer is definitely not A or B. Males need their one X chromosome to develop properly. E is partially right; mutations are not ALWAYS passed down to females, but a female can be a carrier for a genetic disease.

Males have XY sex chromosomes while females have XX chromosomes & the fact is; These two chromosomes ( X & Y ) differ in shape. The X chromosome is larger than the Y chromosome & thus has a greater capacity of carrying genes. That is to say most genes are carried by the X chromosome whereas only a few genes are carried in the Y chromosomes.

Therefore it takes only one defective gene eg. that causing Colour blindness in males for it to have phenotypical impact on the individual whereas it would take two defective genes on both X chromosomes in females for it to have phenotypical impact on the individual. Only one defective gene on either of the two X chromosomes in females results to a carrier individual, a condition whereby the individual carrying the defective gene( usually recessive) is only affected genotypically but looks normal phenotypically, she only carries the gene in her chromosomes but due to its recessiveness, it does not show its effect phenotypically.

Due to this simple reason more males are affected by sex linked defects than females since females, due to the nature of their sex chromosomes can either be normal, carriers or affected( they have 3 alternatives) while we male only have 2(normal or affected)

PS. You should know that most sex linked defects are carried on recessive genes( this is a fact)

With this little lecture I'm sure you can pick the right answer from your multiple choice.

Good luck.

*

c.

the gene is carried on the X chromosome, and a girl has the trait on ONE of her X chromosomes, then she will need it on the other for it to be expressed MOST OF THE TIME. for guys, if they get the mutation on their ONLY X chromosome, they're stuck with it because only the X can carry such mutations

*

* *:

there are 2 X chromosomes in male and only 1 X chromosome in female, and X is where all the stuff happens, so male are twice likely to have a mutation in their sex chromosomes than females.

* I believe the answer is C. The X chromosome does not affect females. Males are affected by the XY, and females by YY. ** 3 weeks ago 0% 0 Votes

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~scrunnchy

Answer 2

Half. (23 for humans).