Species evolve independently possibly due to geographical isolations or behavioural isolations.
Geographical isolation includes the isolation of 2 groups of the same species. Since these 2 groups live in different locations, (e.g. a volcanic eruption resulting in a barrier between one side of an ocean and another side of the ocean), they will have different selection pressures in their different environments as well (e.g. one side of the ocean may have more sunlight and thus more underwater plantations than the other side of the ocean). Natural selection will eliminate those with disadvantageous characteristics (e.g. Fishes that only eat plants and nothing else on the side of the ocean with little plantations) with unfavourable alleles, and select for those with advantageous characteristics (e.g. Fishes are able to eat plants and other organic substances as well on the side of the ocean with little plantations) with favourable alleles.
Since the 2 groups have different selection pressures, natural selection will occur in different ways, selecting for and against different types of fishes with different types of alleles. Also, because of the barrier, they are not able to mate with each other, and there are no mixing of genes from one side of the ocean and the other side. They are genetically isolated. As genetic drift occurs over time, their gene pools become different from each other. Thus, they evolve independently.
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Answer:
DNA replication is important because without it, cell division could not occur. With DNA replication, the set of DNA of a cell can be duplicated and then each cell that results from division can have its own entire set of DNA, and cell division can theoretically continue indefinitely.
The central nervous system (CNS) and effector organs receive messages from receptors through the nerve cells, respectively.
<h3>What do neuron and muscle cells have in common?</h3>
- Tissues are made up of both nerve and muscle cells. Both mitochondria and endoplasmic reticulum are found in muscle and nerve cells. The body's operations are coordinated through the cooperation of muscle and nerve cells.
- Neurons, a type of nerve cell, and muscle cells are significantly distinct from one another. While nerve cells transmit signals from receptor cells to either glandular cells or muscle cells, or both, in order to move the body, muscle cells (myocytes) contract to cause movement.
- The synapse is the point at which a nerve cell can communicate with another cell or muscle cell. The space between the pre-and postsynaptic cell membranes is known as the synaptic cleft.
The function of muscle cells:
The same genetic material can be used to correctly fill in the first blank, and to contract can be used to correctly fill in the second blank.
The genetic material is present in all of the body's cells, including blood, muscle, neuron, and cardiac cells. Cell differentiation causes them to specialize into different types of cells.
Muscle cells' purpose is to contract, which aids in movement and mobility. Skeletal muscles aid in movement and smooth muscles support the operation of interior organs like the uterus, whose contractions aid in childbirth.
The central nervous system (CNS) and effector organs receive messages from receptors through the nerve cells, respectively.
To learn more about Neurons and muscle cells, refer to:
brainly.com/question/12723852
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