0. alana mailed 6 letters in (3 different mailboxes. she
put the same number of letters in each mailbox.
how many letters did alana put in each mailbox? 6 2×3​

answer: the male made the only hereditary contribution to the offspring.

spermism was the one of the two models of theory of performationism, another one was ovism. the theory was predominant in the 17-18 century.   spermist perfromationism was a believe that offsprings develop from tiny fully formed embryo contained inside the head of the male sperm. therefore, it follows the notion that male is the only contributor of the hereditary information from parents to offsprings. among the spermist philosophers some scientists like nicolaas hartsoeker, wilhelm gottfried liebniz and anton leeuwenhoek are known.

it comes from the sun.