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
Ann [662]
2 years ago
5

Why are there more males than females with the krabby-blindness trait?​

Biology
1 answer:
Over [174]2 years ago
3 0

Answer:

Because males are never carriers for x-linked trait, only females are carriers which gives them a lower chance of receiving the trait. While males can either have the trait or not have it.

You might be interested in
Briefly describe how amniocentesis and chorionic villi sampling are used in genetic screening.
bearhunter [10]

Answer:

Amniocentesis is an invasive method that involves the aspiration of 10-20 ml of fetal water through the abdominal wall under ultrasound-guided control. In most cases, the procedure is performed around the 16th week of gestation. The fetal water sample contains fetal cells, mostly cells of fetal skin and the epithelium of the urinary tract.

Chorionic Villus Sampling (CVS) biopsy is performed between weeks 11 and 12 of gestation. During biopsy, with ultrasound guidance, the tissue of the chorionic fossa is aspirated mainly across the abdomen (transabdominal pathway). The biopsy specimen is of fetal origin and belongs to the outer layer of blastocyst cells or the trophoblast (outer layer of the placenta). Very often, the biopsy specimen contains tissue of the decidua (mucous membrane of the uterus) that is of maternal origin, and it is necessary to remove the maternal tissue before any treatment of the sample.

Explanation:

The amniocentesis procedure carries a risk of miscarriage of 0.5-1%.  After aspiration of the fruit of the water, the sample is centrifuged to separate the cells from the amniotic fluid. Separate cells are seeded on a nutrient medium (cell culture) that stimulates cell growth. After about 14 days, the cell culture is further used for various genetic or biochemical analyzes such as karyotyping.

The advantage of chorionic biopsy is the amount of biological material, which is sufficient for the whole a number of different laboratory procedures. Also, a great advantage is the timing of the procedure as it allows diagnosis in the first trimester of pregnancy, but the chorionic biopsy procedure itself carries a risk of miscarriage of 1-2%.

3 0
3 years ago
How does the polio vaccine work
DerKrebs [107]

Polio affects the central nervous system and spinal cord. It can cause muscle weakness and paralysis. Polio is a life threatening condition because it can paralyze the muscles that help you breathe.

The polio vaccine is used to help prevent these diseases in children and adults.

5 0
3 years ago
If a Pacemaker is not placed in a patient, what does the heart do to compensate for that loss?
Soloha48 [4]

Answer:

When something goes wrong with the sinoatrial node, you may develop a consistently slow heartbeat (sinus bradycardia) or the normal pacemaker activity may stop entirely (sinus arrest). If sinus arrest occurs, usually another area of the heart takes over pacemaker activity. This area is called an escape pacemaker.

Explanation:

Happy to assist! If you have any questions or comments, plz comment in the boxes below! Have a wonderful day!!!!!!

                   -Mackie

3 0
3 years ago
Read 2 more answers
Why is it good sanitary practice to wash dishes immediately after a meal?
levacccp [35]
The reason why good sanitary practice should be observe and done especially in terms of washing dishes immediately after a meal in order to prevent bacteria from going and by this, it makes the enviroment more clean and more safe to people to live in. It is because when plates or used utensils are not cleaned after having it used, bacterial growth could sprout, making the environment dirty and dirt could interfere with someone's health into having them acquire illness that would also affect not only one person but also other people living in the house. That is why good sanitary practice is observed, not only because it promotes cleanliness but it is also because for the better health of the individuals.
6 0
3 years ago
Helpp please
const2013 [10]
Ur mom is so big she fell and jiggled
5 0
3 years ago
Other questions:
  • Name one reason scientists believe that all life evolved from a single common ancestor.
    12·1 answer
  • "it is observed that those who report the highest intake of added sugars in their diet are at an increased risk of developing di
    5·1 answer
  • The amount of matter that cycles through a food web
    5·2 answers
  • Will an acidic environment allow more chia seeds to germinate than a neutral environment?
    14·1 answer
  • Which of the following is homozygous dominant? a AA b Aa c aa
    6·1 answer
  • In the bryophyte life cycle, the gametophyte generation consists of
    14·1 answer
  • Help me!!!!!!!!!!!!!
    6·1 answer
  • A population of bacteria is experiencing exponential growth and doubles in population size every 20 minutes. If there was 1 bact
    14·1 answer
  • Structure number 2 is the_______
    5·1 answer
  • Question 4
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!