Respuesta :
A. Species X and Y have more homologies with each other than they do with species Z.
define species ?
A species is the basic unit of categorization and taxonomic rank of an organism, as well as a unit of biodiversity, in biology. A species is frequently described as the biggest group of creatures in which any two individuals of the right sexes or mating types may create viable offspring, most commonly by sexual reproduction. Species can also be defined by their karyotype, DNA sequence, appearance, behaviour, or ecological niche. Furthermore, because fossil reproduction cannot be studied, palaeontologists employ the idea of chronospecies.
The most recent rigorous estimate of the total number of eukaryotic species is between 8 and 8.7 million. However, by 2011, only around 14% of these have been characterised.
In taxonomy, living organisms are placed into groups according to their similarities.
A genus is a categorization level above species. It is made up of closely related species.
To be included in the same genus, species X and Y must share a larger number of similarities or homologies than species Z.
Species Z has no more in common with either Species X or Species Y.
A. Species X and Y have more homologies with each other than they do with species Z.
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