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
Answer:
I can help you
Explanation:
Scientist most likely study Embryos due to the fact that they are barely starting to develop.
We originally study an Embryo to see how humans change and form. So while Embryos are growing and developing into babies. We can study them and see how we change as a whole.
And in Evolutionary Relationship, we do it to help see how animals evolve as well.
Remember that all of this has something to do with Evolution and the change of Physical Structure.
About 37.2 trillion but it is very hard to determine
They get books to look to see what they can learn to tell people who want to know..it's thanks they ca okay so
Answer:
the ducks have associated people with food handouts and so they become close.
Explanation:
