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
Step2247 [10]
2 years ago
6

14. Pat and Tracy each have a sibling who has the recessive trait of sickle cell disorder. Neither Pat. Tracy or

Biology
1 answer:
Nady [450]2 years ago
8 0

Answer:

Since sickle cell disease is a disorder with an autosomal dominant inheritance pattern, and in light of the lack of data, it could be said that the only way for Pat and Tracy to have a child with sickle cell disease is for both of them to be healthy carriers of the gene, with a 25% probability.

Explanation:

Considering that both Pat and Tracy each have a sibling with a sickle cell trait and that both they and their parents are healthy, it must be assumed that some of their parents are healthy carriers:

  1. Pat and Tracy do not have sickle cell trait. In this case, there is no chance that they will have a child with sickle cell disease.
  2. Either Pat or Tracy has the trait, but the other does not. It is possible that at least one of their children is a healthy carrier.
  3. If both Tracy and Pat have sickle cell trait, the chances of having a child with sickle cell disease are:

Alelles       R         r

R              RR       Rr

r               Rr        rr

RR: healthy (25%).

Rr:  healthy carrier (50%).

rr: sickle cell disease (25%).

<em>If Pat and Tracy are healthy carriers of the gene that determines sickle cell disease, the chance of having a child with the disease is 25%</em>.

Learn more:

Autosomal recesive inheritance brainly.com/question/10605612

You might be interested in
What genes/trait found in nature may be helpful if our food was modified to have these traits? Consider how you could modify bot
Bumek [7]

Answer:

Disease resistant traits and selective breeding.

Explanation:

Disease resistant traits in wild plants and animals are helpful if these traits are present in our plants and animals in order to maintain its high quality. We can modify both our meat and plants with the help of selective breeding of high quality plants and animals. Due to selective breeding, we can achieve the desired characteristics through modification in our plants and animals.

6 0
3 years ago
Why is it recommended that athletes add water to their sugar based drinks like Gatorade during sports events
Gnom [1K]

Answer:

Cause it ain't healthy otherwise

Explanation:

8 0
3 years ago
If zebra mussels were introduced to a new lake, what would be the most likely result?
svet-max [94.6K]
I honestly have no clue sorry
8 0
3 years ago
Earth is composed of layers of material with different properties. Which
Irina-Kira [14]

Answer:

mantle

Explanation:

A mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density. All terrestrial planets (including Earth), a number of asteroids, and some planetary moons have mantles.

4 0
3 years ago
Why does every one have cells
jeyben [28]
<span>Everyone has cells because these are the building blocks of life. These tiny particles that clump into groups that form tissues, organs, and organ systems are what makes organisms distinct from non-living things that exist on Earth. Where there are cells, life is present, and in its absence life cannot exist as we know of today. Cells are responsible for bringing different species of organisms that are found in different ecosystems all over Earth. They are tiny but in groups they are responsible for every living organisms that have existed through time.  </span>
7 0
3 years ago
Other questions:
  • In higher latitudes where lakes freeze over in winter, how do cool autumn temperatures help fish make it through the winter?
    15·2 answers
  • Which structures are responsible for producing semen
    5·1 answer
  • Which one of the following phrases best describes the human karyotype?
    5·1 answer
  • In the lock-and-key model of enzyme action, the ___________ fits into the __________ of the enzyme.
    8·2 answers
  • Please help with all of these quickly!
    12·1 answer
  • What term is defined as a terrestrial ecosystem characterized by a particular climate and the organisms found there?
    15·1 answer
  • Identify structure A. Identify structure B. Identify structure C. Identify structure D. 3209-03-07-20-02
    12·2 answers
  • Currently, there are no known risks in genetically modifying crop species. TRUE FALSE
    10·1 answer
  • Humans decide which varations are favorable or desired.
    6·1 answer
  • Is the term that describes all the chemical reactions that occur in a cell, including the building of molecules and breaking dow
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!