What are the names of two colonists who gave eyewitness accounts of the first ?

Edward Winslaw and William Bradford were the two colonists who gave eye witness accounts of the first thanksgiving. The Indians and other settlers celebrated the fall harvest.

Explanation:

It was originally a holiday to thank God and today it's an opportunity to thank God for all the good things.It is celebrated of the fourth Thursday of November and on second Monday of October in Canada. It started when the settlers of Plymouth, Massachusetts celebrated their first harvest in 1621. Governor William Bradford organised a feast and invited Wampanoag Indians, but the feast was called "Thanksgiving " for the first time in 1623. President George Washington proclaimed it as National Thanks giving day in 1789.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.