1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Misha Larkins [42]
3 years ago
9

In humans alkaptonuria is a metabolic disorder in whichaffected persons produce black urine. Alkapotonuria results from anallele

(a) that is recessive to the allele for normal metabolism(A). Sally has a normal metabolism, but her brother hasalcaptonuria. Sally's father has alcoptonuria, and her mother hasnormal metabolism.
a) Give the genotype of Sally,her mother,father and herbrother.
b) If Sally's parents have another child what is theprobabilty that this child will have alkaptonuria?
c) If Sally marries a man with alkaptonuria, what is theprobability that their child will have alkaptonuria?
Biology
1 answer:
miss Akunina [59]3 years ago
8 0

Answer:

a) The genotype of her father = "aa".

The genotype of her mother = "Aa".

The genotype of Sally is "Aa".  

b) 1/2

c) 1/2

Explanation:

a) Sally's father has alkaptonuria. So, the genotype of her father is "aa". Her mother is normal. Since her brother is affected by the disease, he should be homozygous recessive (aa). This means that the mother also has one copy of "a" allele and is heterozygous dominant (Aa). A cross between Aa (mother) and aa (father) would give 50% affected progeny with "Aa" genotype. So, the genotype of Sally is "Aa".  

b) The genotype of her mother= Aa

The genotype of her father = aa

Aa x aa = 1/2 Aa (affected): 1/2 aa (normal)

So, if Sally's parents have another child, there is a 1/2 probability that this child will have alkaptonuria.  

c) The genotype of Sally = Aa

Genotype of the man Sally marries= aa (since he is affected with alkaptonuria)

Aa x aa= 1/2 Aa (affected): 1/2 aa (normal)

There is a 1/2 probability that their child will have alkaptonuria.

You might be interested in
Geotropism is another word for<br> Select one:<br> O geology<br> Ogravitropism<br> Ophototropism
Degger [83]

Answer:

Gravitropism

Step-by-step explanation

The growth of certain parts of plants that are respected by the force of gravity

3 0
3 years ago
Why would a Nonsense mutation be less damaging if it occurred at the end of the gene rather than the
kari74 [83]
Nonsense mutations make stop codons. If the mutation is towards the beginning of a gene, then the protein that gets created will be cut short and not function properly. But if it was towards the end, there is still a chance that the protein will still be able to work.
8 0
2 years ago
WILL GIVE BRAINLIEST!!!!!!
GarryVolchara [31]

Answer:

I think it's D I could be wrong but that's what I'm thinking

5 0
2 years ago
Read 2 more answers
We're does cellular respiration take place in the cell
sergejj [24]

Answer:

f

Explanation:

4 0
2 years ago
Which organelle carries the hereditary or genetic information​
gregori [183]

Answer:

Nucleus because it holds the DNA.

hope it helps :)

7 0
2 years ago
Read 2 more answers
Other questions:
  • Tim has suffered a vasovagal loss of consciousness, commonly known as fainting. environmental triggers, including the smell of t
    7·1 answer
  • Biologists and veterinary specialists refer to the study animal behavior as
    10·2 answers
  • All the alleles present in all individuals in a species are referred to as the ____________ of that species.
    14·1 answer
  • What is the common name for the scientific group bryophytes
    7·1 answer
  • Select the correct answer from the drop-down menu. Why is environmental science important ?
    14·1 answer
  • A hiker crosses topography near the sea that has low elevation and low relief and then climbs up steeply to reach a
    11·1 answer
  • In rats, the allele for long whiskers is dominant to the allele for short whiskers. At another gene locus, a dominant allele pro
    9·1 answer
  • Protecting endangered animals is a different process because
    5·1 answer
  • What makes food for plants by trapping energy from sunlight
    14·1 answer
  • What are there scientific name.<br><br>Please Answer​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!