Achondroplasia is a form of dwarfism in humans. It is caused by a mutant allele of the fibroblast growth factor receptor gene (FGFR) that produces an overactive protein. Having one copy of the mutant allele results in dwarfism. Two copies of the mutant allele results in death before birth. If two people with achondroplasia have a child together, what is the probability that their child will also have achondroplasia?
A) 0
B) 1/2
C) 2/3
D) 3/4
E) 1
C) 2/3
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of what type of sequences were not included?
What are histones, and how are they arranged in nucleosomes?
What will be an ideal response?