Question

I need help with answering the question
"How does the allele combination in parents affect the probability of recessive/dominant phenotypes produced in the offspring?"

Answer 1

Well, most genes have 2 allele's for a gene, so if one is defective than the other one can be used as a backup. Both parents contribute to the offspring by giving them other allele's.

For example in autosomal recessive trait, both parents need to contribute 1 allele that is recessive.

So if Dad is 'Aa" and mom is "aa" if you draw your punnet square the child will have a 50% chance of getting this "trait".

Hope that gets you started, and explains a little background.

Answer 2

I don't understand when the question is saying "probability of recessive/dominant phenotypes." I need help to formulate a hypothesis for this.

Answer 3

@alphadxg

Answer 4

The phrasing of the question is too confusing for me.

Answer 5

ahh ok let me try to explain a different way.

Answer 6

Okay. And can you please help me formulate a hypothesis as well?

Answer 7

I need help for writing a lab on this.

Answer 8

PLEASE!

Answer 9

Basically, a way to ask this question is: Since we know genotype affects phenotype, how do your parents play a role in determining what the phenotypes are.

Gene is made up of 2 allel's, you get one from you mom and you get anotehr from your dad.

Answer 10

Your parents pretty much give you the allele's which can eventually give you your distinct physical appearance that is different from other people.

Answer 11

Yes. I know that the dominant allele masks out the recessive allele because it is powerful. But I don't know how to create a hypothesis for this.

Answer 12

What are you trying to determine, what the goal of this hypothesis and what are you trying to correlate?

Answer 13

I need to answer the testable question, which is the one I posted above, and I need to have it in the structure of "If...then...because".

Answer 14

Is it possible to tweak this hypothesis that I made so far: If there is a specific allele combination found in the parents where they both have dominant/recessive gene combinations, then there is a probability that a set of those genes gets passed on to the...

Answer 15

I think its more specific if you put something along the lines of, "If Parents are heterozygous and homozygous for certain genes, then they have a probability to pass on combinations of allele's to make up those gene."

Answer 16

How will I acknowledge the phenotypes then?

Answer 17

Well, if you know which genes make up a trait, then you can calculate those probabilities.

Answer 18

Using the allele's from your parents of course.

Answer 19

Can you check this out:
"If there is a heterozygous or homozygous allele combination found in the parents, then depending on the dominant or recessive alleles found in the combination will the phenotype be determined because the genes of an individual determine the traits that they have. The differences found in the genotypes in the parents will determine the phenotypes that the offspring has. If in the allele combination, there is a dominant allele found, then the trait of that dominant allele will be shown (even if there is a recessive allele). However, if there are two recessive alleles and no dominant alleles, then the trait written in the recessive allele will be shown. "

Answer 20

@alphadxg

Answer 21

", then depending on the dominant or recessive alleles found in the combination"

Depending if a TRAIT is dominant or recessive. Allele's are not quantifiable.

2 Allele's make up a gene but is not a word used when quantifying a trait, try re-wording that.

Also, try making it a tad shorter, it was kind of hard to read :P

Answer 22

What do you mean by "Allele's make up a gene but is not a word used when quantifying a trait, try re-wording that."

Answer 23

" If in the allele combination, there is a dominant allele found, then the trait of that dominant allele will be shown"

Also, this sentence is what I mean. an Allele is not "dominant". An allele just makes up a gene, and a gene dictates a trait physical/chemical.

Instead you could say, If a trait is autosomal recessive, then 2 recessive allele's are required to make up this trait.

Answer 24

instead of dominant allele, can i say something like dominant gene?

Answer 25

"Instead you could say, If a trait is autosomal recessive, then both parents must have contributed a recessive allele to make up the trait."

Answer 26

Yea that's fine

Answer 27

okay

Answer 28

""Instead you could say, If a trait is autosomal recessive, then both parents must have contributed a recessive allele to make up the trait.""

This points it out pretty well.

Answer 29

so are you saying that instead of writing about that dominant allele, i should just say about the autosomal recessive trait?

Answer 30

*sorry i mean dominant gene

Answer 31

You could, I use autosomal recessive since it is an easier concept to explain.

Autosomal recessive *wikipeids* - An autosomal recessive disorder means two copies of an abnormal gene must be present in order for the disease or trait to develop.


Good way of explaining it.

Answer 32

okay thanks!

and i have two other short questions for this lab if you don't mind answering for me

Answer 33

sure @ me

Answer 34

okay :)