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
A bald eagle and a black bear both have four limbs with digits because they are both tetrapods, descendants of a four-limbed anc
Lisa [10]

The bald eagle and the black bear are tetrapods, which means that they both have four limbs along with the digits. This shows that they both are the descendants of the four-limbed ancestors. However, the limbs of the bear and the bald eagle have different functions. The forelimbs of both these organisms serves different purpose. Hence, their limbs are homologous organs. The homologous organs are those which have the same ancestry but the functions are different.

7 0
3 years ago
A single pair of goldfish in an aquarium produced a large number of offspring. These offspring showed variations in body shape a
vagabundo [1.1K]
The most likely explanation for the variation is the offspring were produced from different combination of genes. A single pair of gold fish mentioned in the question means a male and a female gold fish. The two of them mated and contributed different genes to the fertilized fish eggs, this results in production of various body shape and colouration which is known as variation.
4 0
3 years ago
Describe the relationship between organic compounds, nucleotides, RNA, and a universal genetic code.
makkiz [27]

Answer:

Organic compounds→ nucleotides→ RNA→ universal code.

Organic compounds are the compounds made by living organisms with at least one molecule of carbon linked to different elements like hydrogen, oxygen, or nitrogen.for example: nucleotides.

A nucleotide is the monomer units of nucleic acids- DNA and RNA. Each nucleotide is made up of organic compounds- sugar, a phosphate molecule and nitrogenous bases (adenine, guanine, cytosine, thymine and uracil).  

The arrangement of nitrogenous bases in DNA decides the fate of proteins as the sequence of these bases acts as code arranged in the triplet called "codons" which code for specific amino acids.

Thus, Organic compounds→ nucleotides→ RNA→ universal code is the correct answer.

3 0
3 years ago
Can spiders smell???????????
Naya [18.7K]

Answer:

Yes

Explanation:

Spiders, in fact, do taste, and also smell, through special sensory organs on their legs, as well as on their pedipalps. And they hear – or, more specifically, they sense vibrations – through hairs and tiny slits distributed over much of their body.

5 0
3 years ago
Read 2 more answers
Write two substance produced by testes?​
Lesechka [4]

Answer:

The testes are two oval-shaped male reproductive glands that produce sperm and the hormone testosterone.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement below is correct about the digestive system? A.The small intestine comes together with the stomach to form a tis
    13·2 answers
  • A person with type ab blood receives a transfusion of type o blood. will there be a transfusion reaction? why or why not?
    15·2 answers
  • Machine generated alternative text: 11) process which requires the calculation of an interval size or the interval is
    7·1 answer
  • The water cycle consists of some water evaporating from the surfaces of bodies of water and going into the air. As result of air
    13·1 answer
  • Why do scientists divide the planets into inner and outer planets
    11·2 answers
  • Which of earth layers has the same chemical composition as the mesosphere
    13·1 answer
  • when potatoes are in the ground, do they swell with water when it rains? If not, how do you explain that, and if so, what would
    8·1 answer
  • What macromolecule is the enzyme ATP synthase?​
    14·1 answer
  • Consider a cup made of plastic. What are the pros of using plastic?
    8·2 answers
  • Select the correct locations on the image.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!