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3 years ago

Why can’t the evolutionary relationships between certain species be explained thoroughly?

Biology

1 answer:

vredina [299]3 years ago

3 0

Answer:

Phylogeny: It is related to evolution dealings in the evolutionary development of a species. It is represented by different ways vertical or slanted.

Phylogenesis: It refers to the evolutionary relationships among species.

Phylogenetics: It is determination or estimation of evolutionary relationships among groups of species, organisms and genes.

Phylogenetics is a field of biology which is used to find relationships among different organisms. This relationship is showing through a tree (used to model actual evolutionary relationship of organisms). Ancestral divided into two descendant species because closely related organisms are shown in near branches. If there is too much divergence between two species its mean they are not closely related.

The history of speciation (one species becomes divided into more than one new species) tells us how these species are related to each other. If they evolve to be separate species relatively recently then they are "closely relative" similarly if they evolve to be separate specie long above then they are "distant relatives". For example orthologs are genes in different species that evolved from common ancestor gene by speciation; they retain same function in the course of evolution.

Explanation:

Si.

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What type of muscles cannot be controlled consciously

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How do rates of mutation "power" molecular clocks?

stepladder [879]

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while working in the lab,you drop an empty flash on the floor and it breaks. what is the appropriate action to take

ladessa [460]

Answer:

clean it up

Explanation:

cause if someone isn't looking where they're going and they trip on something then fall in the glass

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We have talked about the central and peripheral nervous systems. We know that the peripheral nervous system relays signals to an

JulsSmile [24]

Answer:

The peripheral nervous system has - Somatic nervous system and Autonomic nervous system.
These systems control our body action by this controls all the types of muscles.

Explanation:

Somatic nervous system have - Cranial nerves and Spinal nerves

Autonomic nervous system have - Sympathetic and Parasympathetic system.

The somatic nervous system controls our voluntary and involuntary actions by cranial and spinal nerves and controls all three types of muscles such as cardiac, smooth and skeletal.

The autonomic nervous system controls the involuntary actions of our internal organs.

The sympathetic and parasympathetic system relates to all types of muscle.

The sympathetic and parasympathetic system accelerates and decelerates the heart beat respectively, by this controls the cardiac muscle.

The sympathetic and parasympathetic system stimulates and relaxes our internal organs respectively, by this controls the smooth muscles.

The sympathetic and parasympathetic system prepares our body as a whole for a action and also relaxes our whole body respectively, by this controls the skeletal muscles.

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