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
dedylja [7]
3 years ago
7

Your first cousin died of tay-sachs disease (autosomal recessive, incidence 0.09%). you are not affected, nor is anyone else in

your extended family. what is the chance that you are a carrier?
Biology
2 answers:
AlexFokin [52]3 years ago
5 0
<span>25%

   Starting from my First cousin family, I know for sure that the Uncle is is a carrier (Aa) and he must have married a wife who is also a carrier (Aa) and that is how they got an affected son. Thus, this leads to the fact that either both of my grandparents are carriers (Aa x Aa) or only one of them is a carrier (Aa x AA). As a result, the chances that my mom (who is related to the uncle who has a defected child) is a carrier is either (2/3 or 1/2) depending if my grandparents genotype, respectively. Thus, if my mom chances of being a carrier is 1/2 then my chance of being a carrier is 1/4. (given that my dad is not a carrier b/c CF is a rare disease) However, if my mom chance of being a carrier is 2/3 then my chance of being a carrier is (2/3)x(1/2)=(1/3) As a result, I could either be 1/4 or 1/3. But since the answer only provide the choice of 1/4 and not 1/3. This leave 25% is the correct answer.</span>
xeze [42]3 years ago
5 0

he opportunity to become a carrier is 25%. Because Tay-Sachs can only happen if both of your parents have the defective gene. Meanwhile, the infected Tay-Sachs is your cousin. then you may just be a carrier so you do not suffer from Tay-Sachs.

<h2>Further Explanation </h2>

Tay-Sachs disease may be a rare hereditary disease that progressively destroys nerve cells (neurons) within the brain and medulla spinalis. This disease is that the oldest fat reserve disease medically reported in 1881.

Causes of Tay-Sachs

Tay-Sachs may be a inherited disease caused by a defective gene. This damaged gene causes the body can't make the protein hexosaminidase A. Without this protein, chemicals called gangliosides can accumulate within the nerve cells of the brain and destroy brain cells. Because the explanation for Tay-Sachs is hereditary, so Tay-Sachs may be experienced if you've got a family or parents with Tay-Sachs gene abnormalities.

Symptoms of Tay-Sachs

1. Symptoms of Tay-Sachs in infants, including:

  • Hearing loss
  • Experience progressive blindness
  • Decreased muscle strength
  • A surprising increase in response
  • Paralysis or loss of muscle function
  • Muscle stiffness (loss of elasticity)
  • Delay in mental and social development
  • Slow growth
  • There are red spots on the eyes

2. Tay-Sachs symptoms in adolescents and adults, including:

  • Weak muscles
  • Speech disorders like slurred
  • Unstable gait
  • Brain memory problems
  • Tremor

Learn more

Definition of Tay-Sachs brainly.com/question/7578005

Symptoms of Tay-Sachs brainly.com/question/7578005

Details

Grade: College

Subject: Biology

keywords: Tay-Sachs

You might be interested in
I need someone to write me an essay, please. Describe the different types of cellular transport and explain how the structure of
bearhunter [10]

Answer:

Some cells function best at a pH of 5, while others are better at pH 7. ... control what crossed their membranes, either no molecules would make it across, ... Various types of cell transport are summarized in the concept map in ... Figure 5.7.5 demonstrates the specific outcomes of osmosis in red ...

Explanation:

7 0
1 year ago
Do Different cell types also have special duties, like building skin or bone, pumping out hormones, or making anti-bodies.
Schach [20]

Answer:

Yes, different cell types also have special duties, like building skin or bone, pumping out hormones, or making anti-bodies.

Explanation:

Cell is the basis structural and functional unit of a living organism. The body of a human is composed of trillions of cells that are organized in around 200 types of cells.

<u>A tissue is simply a group of specific kind of cell that have  a specific role.</u>

  • For example: The nervous system contains cells called neurons that have ability to transmit message from one place to another and allow us to respond to any environmental stimuli, such as heat, cold, danger etc.
  • Skin cell is composed of cells that have a role in protecting the body against the attack of harmful microbes. They also protect have role in building new skin cells and adding the protection to our body.
  • Blood cells have a role in providing us immunity (for example white blood cells) therefore, make us better able to protect ourselves from danger of diseases.
  • Muscle cells help us in moving our organs as well as allowing the whole movement from one place to another.

Thus we see that different types of cells have special functions and all these different cells coordinate with each other to make an organized and functioning body of a living organism.


Hope it help!

7 0
3 years ago
Prokaryotes have no (blank) DNA in their (blank)
lesya [120]

Prokaryotic cells lack a defined nucleus, but have a region in the cell, termed the nucleoid, in which a single chromosomal, circular, double-stranded DNA molecule is located.

7 0
3 years ago
The drinking water in a location in Florida had a foul odor and taste. Investigations revealed that storm runoff had carried hug
Anna71 [15]
Answer: <span>B) Plant trees along canals and roadways on their property to filter runoff and prevent soil erosion

--------

The roots of trees help prevent the soil from being easily eroded by holding the soil in place and taking up the water. The other choices, A, C, and D would cause further erosion by removing objects that would stop the rain or by aiding erosion due to gravity. 

</span>
7 0
3 years ago
Read 2 more answers
1. care este traseul oxigenului din aer pana in creier?
Elza [17]
1 bc it makes the most sedentary
5 0
3 years ago
Other questions:
  • Brainliest!!
    13·1 answer
  • which of the following resulted from codominance? 1)a person with AB blood type 2)a flower with pink petals 3)a rabbit with whit
    6·1 answer
  • during the day, plants produce _ by splitting water molecules in the light dependent reactions of photo synthesis. at the same t
    5·2 answers
  • Which rocks are examples of organic sedimentary rock?
    12·1 answer
  • The science and tools used to advance agriculture are known as?
    11·1 answer
  • What is the amount of heat required to raise the temperature of water reffed to as?
    6·1 answer
  • Why are some leaves spiny,or needle-shaped?
    13·1 answer
  • Match the following items:
    9·2 answers
  • Can someone pls help me<br> WILL MARK U BRAINLIEST !!
    8·2 answers
  • Name the parts of the diagram of a kidney ​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!