Biology, 04.02.2020 08:44 mocheal8216
Why is the horseshoe crab an example of a living fossil?
a. there are fossils of extinct ancestors of horseshoe crabs, and the species is still alive today.
b. it hasn't changed since it first appeared on earth.
c. the structures in the horseshoe crab don't decompose, so complete fossils are discovered.
d. it's often found frozen to death and free of decomposition.
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Color blindness is a recessive trait. the gene for color blindness is on the x-chromosome. the family tree below shows the trait of color blindness. theonly unknown is the father in the first generation.
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Why is the horseshoe crab an example of a living fossil?
a. there are fossils of extin...
a. there are fossils of extin...
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