¿Cuáles son las interacciones que se presentan entre el planeta tierra y los seres humanos?

I’m stuck on this question cuz i’m stupid sksksksk

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees