Biologists do not fully understand DNA because there are constant changes and new discoveries developing.
<span>One cell becomes two cells that have different copies of DNA.
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Hope this helps!
-Payshence xoxo
transcription is after the helicase unzips the DNA strand and copies the segment and then moves it and so it can be translated into amino acids
Answer: The probability is 100%.
Explanation: The chromosome X is related to gender. A man carries two different chromosomes (XY) and a woman carries two similar chromosomes (XX). The offspring of a couple will inherited:
- If it is a boy, he inherites the chromosome Y from his father and X from his mother;
- If it a girl, she inherites X from her father and X from her mother;
In the question, the woman is color-blind, which means she carries the recessive alleles: 
The man, on the other hand, is normal, so his X-linked genotype will be:
.
Now, since they have a daughter, she inherited her double X from each of her parents, which means she inherited one
from her mother and one
from her father.
So, the daughter's genotype can only be heterozygotic 
in other words, the probability is 100%.
Answer:
hi!
Explanation:
If 2 parents are carrying sickle cell with them, if there child receives 1 different copy from each of the parents, they have sickle cell. but those parent's who are carrying the sickle cell do not get it, they can only pass it down. So if a child gets a Sickle cell gene (S), and a sickle cell gene (A) they get sickle cell.
I hope this helped! If it didnt, ill fix my answer! just let me know!