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Speciation is when one species evolves into two or more species. There are two mechanisms by which speciation can occur. The first is allopatric speciation. This is where a species is split into two populations by a geographical barrier for an immense period of time. This barrier can be an ocean, a mountain range, a canyon, or anything else that would keep two populations from interbreeding.
The second mechanism is called sympatric speciation. This occurs when a new species arises within the parent population. This type of speciation can occur for many reasons. Sometimes a group of the population will search for food in other habitats and they have to adapt to the new challenges. Another possibility is if some of the females start to choose mates based on certain characteristics and others do not. The sexual selection will lead to new characteristics, and a new species in a relative short period of time. The last condition for this mechanism is large genetic variation. Sometimes meiosis, or mitosis does not occur properly and this leads to extra chromosomes in an organism. When this happens, the organism can only reproduce with others that have the same number of chromosomes. This leads to a new species within the parent population.
Speciation can occur due to allopatric isolation (geographic barrier), sympatric isolation (different ecological niches), or parapatric isolation (partial geographic barrier). It can also result from reproductive isolation, where individuals can no longer interbreed due to genetic, behavioral, or ecological barriers. Changes in chromosome number, mutations, and natural selection can also contribute to speciation.
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What type of speciation occurs when a plant population becomes reproductively isolated while living with its parent population?
Sympatric speciation occurs when a plant population becomes reproductively isolated while living with its parent population. This occurs without physical separation, often driven by ecological or behavioral factors that prevent interbreeding between the populations.
Suggest an explanation for observations that animals and plants of India are almost completely different from the species found in near by Southeast Asia?
The differences in species between animals and plants in India and Southeast Asia are due to historical factors such as geological events, climate patterns, and barriers to species dispersal like mountains and oceans. These factors have influenced evolutionary processes, leading to unique adaptations and speciation in each region. Additionally, variations in habitats and environmental conditions also play a role in shaping the biodiversity of each area.
When you are pulling or extracting information out of the database with a query - you can use to set conditions that must be met for a record to be displayed?
To set conditions when querying a database, you can use the WHERE clause in your SQL query. This clause filters the results based on specified conditions. You can combine multiple conditions using logical operators such as AND, OR, and NOT to further refine your query results.
What types of bacteria are found in harsh or extreme conditions?
Bacteria that can thrive in harsh or extreme conditions are often categorized as extremophiles. These include thermophiles that live in high temperatures, psychrophiles in cold temperatures, acidophiles in acidic environments, alkaliphiles in alkaline environments, and halophiles in high-salt environments. These bacteria have developed specialized adaptations that allow them to survive and function in such challenging conditions.
What is the name for a foot doctor?
A foot doctor is called a podiatrist. They specialize in diagnosing and treating foot and ankle conditions.
What word or words defines rapid speciation under conditions in which there is little competition?
Adaptive Radiation
True or false scientists believe that all speciation takes place gradually over a very long period of time?
False. Scientists recognize that speciation can occur gradually over long periods of time (allopatric speciation) or more rapidly through processes like genetic drift, natural selection, and hybridization (sympatric speciation). The pace of speciation can vary depending on environmental conditions and other factors.
Speciation caused by change in the course of a river is an example pf divergent speciation?
Allopatric speciation.
What evolution starts with one species and due to different environmental conditions the organisms separate and become more different?
Allopatric speciation.
Which increase speciation?
Geographic isolation Low geneflow.
Types of Speciation?
sympatric , allopatric and parapatric speciation
What is an effect of adaptation?
Speciation Adaptive radiation refers to changes in a species in response to varying environmental conditions. many new species form
What is necessary for speciation to occur?
Isolation Is necessary for speciation to occur.
Why does polyploidy not cause speciation or even be associated with speciation?
Actually it is.
Complete reproduction isolation is evidence that what has occurred?
speciation
Home of the independent response to separation?
if you are referring to the the worksheet the evolution of living things from the textbook holt science and technology, the answer is speciation
What is the accepted theory of speciation?
Caralous linnaeus theory is accepted theory of speciation
