Answer/Explanation:
Types of reproductive isolation include: temporal, ecological, mechanical, and behavioural.
A snail with a flat disc-like shell will not be able to mate with a snail having a conical shell - this is an example of mechanical isolation, where the animals are physically unable to mate due to incompatible body shapes and sizes.
The reproductive organs of male bush babies do not match with the reproductive organs of females of other bush baby species. - this is another example of mechanical isolation, as the sexual organs will physically not allow reproduction between these species
The mating call of a cricket is not recognized by a cricket of other species - this is an example of behavioural isolation, which results from incompatible mating rituals. I.e. the animals do not respond to each others mating behaviours
The signals sent by a male firefly are not recognized by the female firefly of other species. - this is also an example of behavioural isolation.
Temporal isolation is where species cannot interact because they do not have the same mating seasons or are not active at the same type of day. ?Ecological isolation occurs when two species do not come into physical contact to one another because they access different areas of the habitat. E.g. mating zones, food sources or nesting sites.
Answer:
Viruses. no metabolism not alive can not be killed ... The symptoms from a viral infection occur when the virus is in a lytic state. steps: attachment- ... biosynthesis- phage DNA directs synthesis of viral components by host cell ... Viral DNA destroys Cell DNA, takes over cell functions and destroys the cell.
Answer: Ribose nucleotides and the nitrogenous bases
Explanation: RNA consists of ribose nucleotides (nitrogenous bases appended to a ribose sugar) attached by phosphodiester bonds, forming strands of varying lengths. The nitrogenous bases in RNA are adenine, guanine, cytosine, and uracil, which replaces thymine in DNA.
Answer:
i think its B
Explanation:
good luck and may the Lord bless you
Answer:
Fibrous proteins are generally composed of long and narrow strands and have a structural role.
Globular proteins generally have a more compact and rounded shape and have functional roles.
Explanation:
fibrous proteins ARE something, whereas globular proteins DO something.
