Hi I have a few questions regarding GeneticsProbability Ques

Hi I have a few questions regarding Genetics/Probability....

Question 1-- Branching:

How many gametic combinations would be possible if a human infividual were heterozygous for 23 genes on 23 different chromosomes (AaBbCcDdEeFf...UuVvWw)? In reality, each chromosome has many genes, not just one. Crossovers between these genes can create new combinations of genes, which would lead to a drastic increase in the number you have calculated. How would you relate this to the phrase \"one in a million\"? (I did a questions with 3 genes on 3 chromosomes and used branching to get 8 genetic combinations. I don\'t think I can use branching with 23 though. How do you do this?)

Question 2 -- Coin Flip:

When doing a coin flip, what pattern would you observe if everyone in the class were to bias their results to 5 heads/5tails? (on this one I don\'t understand the question. If everyone chose 5 heads/5tails wouldn\'t that be the only outcome? I\'m confused).

Question 3 -- Coin Flip:

Which term refers to the 5h/5t (5 heads/5 tails). How many different ways can the combinations of 5 heads and 5 tails occur? In other words, what is the coeficcient for this term in the binomial equation? Derive this term using the binomial formula.

Question 3 -- probability:

Calculate the probability of having 10 boys.

If you have 7 children, Calculate the probability of having AT LEAST 5 boys.

Question 4 -- probability:

A dog has a diploid number of 78 chromosomes. How many chromosomes would be expected in an egg cell produced by the dog? How many chromosomes would be expected in one of the dog\'s heart cells?

Question 5:

Which division of meiosis (meiosis 1 or 2) is the Law of Independent Assortment carried out?

Question 6:

In the cross Aa Bb Cc Dd Ee x Aa Bb Cc dd Ee what proportion of offspring are expected to be homozygous recessive for all 5 genes?

In the same cross, what is the probability of offspring with the following genotype: AA Bb cc Dd ee?

Question 7 -- Probability:

Albinism in humans is autosomal and fully recessive to normal color. A couple, who are both normal, have a duaghter who is albino and a son who is normal.

What is the probability that their normal son is a carrier of the albinism gene?

The couple wants to have 3 more children. What is the probability that they will have 3 normal girls?

Solution

1.

There are 2^n possibilities if there are n chromosomes.

Thus, there are 2^23 = 8388608 [ANSWER]

So indeed, this is event \"one in eight million.\" One in a million is no exaggeration of it.

*********************

Hi! Please submit the next part as a separate question. That way we can continue helping you! Thanks!