Ascientist finds two similar flies that have the same size, coloration, and overall morphology. however, further studies show that no mating is possible between them. what could be the appropriate interpretation for this?
a: both flies belong to the same species but different genus.
b: both flies belong to the same genus but different species.
c: both flies belong to the same genus and same species.

The correct answer to explain the phenomenom in which  two similar flies that have the same size, coloration, and overall morphology. However, further studies show that no mating is possible between them. Is:

B: Both flies belong to the same genus but different species.

Explanation:

The biological definition of species is characterized by the ability of mating and producing fertile offspring. In this case, the organisms can't mate, therefore they don't belong to the same species. Their similarities are due to the "genus" which is a common trait, characteristic, or factor that both share. This can be practically anything, the important thing is that they share it but can't mate to produce offspring.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]