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Talja [164]
3 years ago
14

A species is a group of organisms capable of mating and producing offspring, and speciation is the process of forming a new spec

ies
One way a new species may form is by _____________ isolation. This occurs when members of a population are physically separated, for example, by a river, or a desert.
Biology
2 answers:
vodomira [7]3 years ago
8 0

The answer is geographic because once the species separate they may evolve differently creating new species.

bezimeni [28]3 years ago
5 0

Answer:

geographical isolation

Explanation:

one way a new species ma form is by geographical isolation.

<em>Geographical isolation is a form of reproductive isolation in which a physical barrier separates two population of similar species. Each population then go on to become a new species.</em>

Reproductive isolation itself is a mechanism of speciation in which organisms are prevented from producing offspring through mating or produce an invalid offspring if mating and fertilization cannot be prevented from taking place.

When two population of the same species become geographically isolated, each population will follow different evolution path and then become new species.

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Match the terms to their definition. 1. chromosome a cell whose nucleus is not bound by a membrane 2. eukaryote a genetic charac
yanalaym [24]

Answer:

1. chromosome: tight coils of DNA

2. Eukaryote: a cell that has a membrane-bound nucleus

3. Gene: a specific sequence of DNA nucleotides that carry hereditary traits

4. Prokaryote: a cell whose nucleus is not bound by a membrane

5. Trait: genetic characteristic of an individual

Explanation:

Chromosomes are the thread-like structures that appear during cell division. Each chromosome is made up of DNA tightly coiled with its packing proteins.  

A cell is defined as eukaryote or prokaryote on the basis of the presence of a membrane-bound nucleus. The cells that lack the membrane-bound nucleus and other membrane-bound organelles are called prokaryotic cells. Example: bacteria.

The cells that have a membrane bound nucleus in which DNA is present are called eukaryotic cells. Example: Plant cells.

A stretch of DNA that code for a particular protein and thereby regulate specific genetic trait is called a gene. Genes are present on chromosomes and are carried from one generation to next to maintain the genetic traits.

The features of living beings regulated by the gene are called trait. Example: skin color, eye color, etc.  

6 0
3 years ago
What ion movement changes the membrane potential in a contractile cell from negative to positive during the rapid depolarization
Lesechka [4]

Answer:

The influx of calcium ions.

Explanation:

The influx of calcium ions at a certain point produces phase of the action potential also called depolarization which results in the ion movement changes the membrane potential from negative to positive inside the cell.

In action potential, calcium ions may control gene transcription, cell excitability, and neurotransmitter release. In chemical synapses, the influx of calcium ions leads to vesicles filled with neurotransmitters move to the surface of the cell, and into the synaptic cleft release their contents.

8 0
3 years ago
Does a carbon cycle have to do with decompsers,plants,photosynthesis etc​
Dahasolnce [82]

Answer: Decomposers break down the dead organisms and return the carbon in their bodies to the atmosphere as carbon dioxide by respiration.

Explanation: In some conditions, decomposition is blocked. The plant and animal material may then be available as fossil fuel in the future for combustion.

8 0
3 years ago
Diffusion is movement of a molecule from an area of higher concentration to an area of lower concentration. True or false
Gemiola [76]
The answer is false hope this helps
4 0
3 years ago
An ion forms when an atom gains or loses an
Natali [406]

Electrons are subatomic particles that orbit around an atom. This electrons can be shared with other atoms when two atoms are willing to bind with eachother.

Answer: Electron.

Hope it helped,

Happy homework/ study/ exam!

5 0
3 years ago
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