Viruses were discovered recently because they are microscopic and cannot be seen under a regular microscope. The invention of the electron microscope in the 20th century allowed scientists to visualize and study viruses, leading to their discovery.
The exact number of how many viruses exist in the world is not known because there have been some that have yet to be discovered. Also, many known viruses are also able to mutate into brand new viruses. This makes it next to impossible to get an exact count.
The sentence has a lack of punctuation and capitalization at the beginning. Additionally, "Scientists have recently discovered" is an incomplete thought. To improve clarity, it can be revised as: "Scientists have recently discovered that not all genes adhere to predictable Mendelian patterns of inheritance. This has forced them to reexamine some formerly unassailable assumptions."
There are an estimated 320,000 mammalian viruses alone, and this number is constantly growing as new viruses are discovered. Viruses are diverse, constantly evolving, and have the ability to jump between different host species, making it challenging for scientists to accurately count and categorize all virus species. Additionally, many viruses remain undiscovered in the natural world.
Robert Hooke did not include viruses in his observations because viruses were not discovered until the late 19th century when advancements in microscopy allowed scientists to see them. Hooke's work in the 17th century focused mainly on plant cells and microscopic structures in living organisms.
Both types:are spread by contact with a contaminated sourcecan be blocked with defensescan be modified and weaponisedcan go away after a time if certain measures are takencan kill whatever they infectcan change over timecan be costlyDifferences:computer viruses only work in a computer hostbiological viruses only work in a biological hostbiological viruses can spontaneously mutatecomputer viruses are createdbiological viruses are far more complex
Usually, yes. The most common causes are respiratory synsythial virus (RSV), parainfluenza viruses, influenza viruses. Metapneumovirus, human bocavirus, and a number of other recently discovered viruses are implicated as well.
water was recently discovered on planet mars
why were viruses discovered later than other types of microorganisms.
Biological.
buckyballs, buckytubes or nanotubes are the recently discovered forms of carbon from 1950s.
plants
I don't know what you mean by "recently". It was discovered in the 1500's by the Spaniards.
That would be UB313, discovered in 2005,
about 403.
Ununoctium
The small bug with long antennae that I recently discovered in my garden is called a "silverfish."
HPV, discovered in 1956, is a group of viruses that affect the skin and mucous membranes of humansHPV was discovered in 1993.