Question 9 (1 point) How do you explain that the moon sometimes becomes invisible to the observer?
The sun and moon are on the same side as Earth.
This is called a new moon
The moon is always invisible
The side of the moon lit by the sun cannot be seen.
Question 10 (1 point)
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Akrabby blind whale has married pearl who has normal vision. oneof their two sons is also colorblind. what arr the genotypes of the parents?

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?