You absorb vitamin d from sunlight shining on your skin.
Vitamin d can help the absorption of calcium, which is capable for strengthening your bones and teeth.
Therefore if u r lacking of vitamin d, your bones and teeth may be soft, and especially among children, you may get ricket, where the legs are bent outwards.
All of Darwin’s observations would prove this theory true.
Answer:
tt
Explanation:
T=dominant
t=recessive
To be considered recessive, 2 lowercase letters are required.
TT or Tt have at least one dominant allele
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