They form organs so the human body can support itself and live. Hope this helps.
The
molecular clock tracks down nucleotide sequences for DNA or amino acids that
contain sequences of proteins. Scientists use this to deduce the time in
history where life forms possibly have diverged. This technique is also known
as a gene clock or an evolutionary clock.
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a).Jill and Tom both have recessive traits for color-blindness. There is a 25% chance of their children being color-blind
b) she inherited the X chromosome from both Jill and Tom
Hemophilia is an example of a genotype. Hope this helped!
