Which one has closer "relationship"?

Question

same genus, different species (eg: Clostridium pasterianum and Clostridium tetani)

or

same species, different genus (eg: Aspergillus oryzae and Rhizopus oryzae)

and why??

thx

Answer 1

It's the first one. Clostridium pasterianum and Clostridium tetani are two different types of Clostridium. But Aspergillus oryzae and Rhizopus oryzae aren't related at all.

It's a bit like saying "Cow, black" and "Cow, white". They're both types of cow. But "Cow, black" and "Crow, black" are not related.

Answer 2

The same genus and different species.  The second option is nonsensical.  If two organisms are in the same species, then they can't possibly be in different genera.

<<same species, different genus (eg: Aspergillus oryzae and Rhizopus oryzae)>>

That's merely a coincidence, and has nothing to do with any relationship.  That'd be rather like assuming two men called Michael must be relatives.  That pair aren't members of the same species at all, they merely have the same specific name.  Lots of example of such coincidences can be found.  Such-and-susch /darwini/ comes to mind.  A considerable number of critters got named in honour of Charles Darwin.

Answer 3

for example, panthera leo is the scientific name for lion. panthera being the genus, leo being the species. a lion is also pretty close to a leapard, but its genus species would be panthera pardus. they have the same genus, not the same species but they r still pretty close. if they have the same genus, they have to have the same species, which would mean they r the same animal. they cannot have the same genus and be in a different species.

Answer 4

i think it's the second one