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Bumek [7]
3 years ago
6

What are the two molecules phages made out of?

Biology
1 answer:
prohojiy [21]3 years ago
3 0

Answer:

Like all viruses, phages are simple organisms that consist of a core of genetic material (nucleic acid) surrounded by a protein capsid. The nucleic acid may be either DNA or RNA and may be double-stranded or single-stranded.

Explanation:

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What are the Reproductive Barriers that keep species separate?
stiv31 [10]

Answer:

C. habitat isolation; temporal isolation; behavioral isolation; mechanical isolation; gamete isolation.

Explanation:

Reproductive Barriers may be of any type which includes habitat isolation; temporal isolation; behavioral isolation; mechanical isolation; gamete isolation. All these examples are categorized under prezygotic barriers.

Habitat isolation: It occurs in case of allopatric speciation, initially all the members of a species can mate with each other but later on due to geographic barriers like due to a rift, their habitat separates and they cannot mate with each other and later on they evolve as separate species.

Temporal isolation: In temporal isolation, reproductive barrier is different time/season of breeding like American toads and Fowler's toad both are closely related and have potential to mate but due to different mating season they are unable to mate with each other. American toads mate during summers while Fowler's toad mate during late summers.

Behavioral isolation: When the members of two closely related species behave and respond to different mating behavior, it is known as behavioral isolation. For example breeding calls.

Mechanical isolation: Mechanical isolation occurs because of structural or chemical barriers. For example: when the shape of pollinator does not match with that of flower then the male gametes will not be able to reach to the egg cell.

Gamete isolation: When the gametes are unable to fuse due to any reason like less mobility of sperm in the female reproductive tract.

6 0
3 years ago
How is bacteria similar to birds?
Arisa [49]
Bacteria and birds both are organisms
7 0
3 years ago
A karyotype is a visual representation of an organism's chromosomes. What type of information about an individual can be determi
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3 years ago
All four scientists were very important in the development of cell theory. One scientist's research stands out in proving that d
xenn [34]

Answer:

<u>Louis Pasteur</u>

Explanation:

Although louis was a great scientist who made contributions to the cell theory postulating that cells come from preexisting cells, he was a renowned and father of microbiology. He proved that diseases are caused by microorganisms, developed the first vaccine and provided logical ground knowledge on fermentation and brewing.

6 0
3 years ago
Describe at least three ways that an infectious disease, like smallpox, can significantly impact history.
Alja [10]

Answer:

the discoveries, events and people that continue to affect the history ... The extremely infectious disease was class-blind, killing rich and ... that a few cells remaining in Petri dishes could be used as biological weaponry. ... smallpox, a disease that had now been killing unhindered for at least 2,800 years.

Explanation:

7 0
3 years ago
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