Answer:
If both parents are healthy carriers of the gene that causes cystic fibrosis, then their concern is justified, since they have a 25% (1:4) chance of having a child with cystic fibrosis.
Explanation:
The gene that produces cystic fibrosis is called CFTR, and its inheritance pattern is autosomal recessive.
Both parents may have the gene and not manifest the disease - healthy carriers - since the condition of homozygosity is necessary for cystic fibrosis to appear. However, they are likely to have children who are healthy, healthy carriers or sick with cystic fibrosis:
Genotype of healthy carrier parents is N/cf, where N is the normal gene and Qf is the abnormal gene.
N/cf X N/cf
Alleles N cf
N N/N N/cf
cf N/cf cf/cf
The chances of having:
- Healthy child are 25%.
- Healthy carrier child are 50%.
- Child with cystic fibrosis are 25%.
In this case, the concern of both parents is justified, since the probability of having a child with cystic fibrosis is 1:4.
Lerarn more:
Cystic fibrosis inheritance brainly.com/question/6584627
Rapidly spinning magnets around metal will produce electric charges.
Answer:
Explanation:
Leison is what is been seen in the brain as white Spot it is as a result of activities carried out in the brain. MR monitors how blood flows into a part of the brain will then transfer the lesion into the brain.
Myaline sheets surround the nerves cells forming a layer round the axons.
Break down of Myaline sheathe leads random shot of neurons this then result in white leison. The leison disappers after the myelin sheat have been healed or repaired by the actions of the neuron present.
Neurons then carries signals or impulse that the myelin sheat have been fixed.
Answer:
D
Explanation:
As we grow, skin cells and blood cells are constantly dividing but as the get damaged. The body creates new cells
