I need help with this i dont know how to make a pedigree (9th grade) pls help me the instruction was:
1)Draw a pedigree showing all the individuals describe in the problem.(include their name if given).

2) label the genotypes of as many individuals in the pedigree as possible.

3)shade the half of the symbol if you know that the individual is heterozygous or a carrier.

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled