What is sympatric speciation in plants?
Sympatric speciation (biology definition): a form of speciation wherein a new species evolves from a single ancestral species while inhabiting the same geographic region. Sympatric speciation is more common in plants. For instance, parent plants produce offspring that are polyploid.
What is the result of sympatric speciation?
Sympatric speciation occurs when populations of a species that share the same habitat become reproductively isolated from each other. This speciation phenomenon most commonly occurs through polyploidy, in which an offspring or group of offspring will be produced with twice the normal number of chromosomes.
What causes sympatric speciation?
Sympatric speciation occurs when there are no physical barriers preventing any members of a species from mating with another, and all members are in close proximity to one another. A new species, perhaps based on a different food source or characteristic, seems to develop spontaneously.
What can result in rapid sympatric speciation in plants?
What can result in rapid sympatric speciation in plants? Self-fertilization of a polyploid adult that results in a small population of polyploid individuals that are distinct from the ancestral species with normal ploidy.
What can result in rapid sympatric speciation in plants quizlet?
*Although sympatric speciation is less common than allopatric speciation, sympatric speciation can occur if gene flow is reduced by such factors as polyploidy, habitat differentiation, and sexual selection (These factors can promote allopatric speciation also).
What are some examples of speciation?
Some Examples of Speciation Kaibab and Abert’s squirrels – Separate squirrel species evolved after the Grand Canyon was formed, resulting in different squirrel species evolving on either side of the canyon.
What is allopatric speciation and give an example?
Allopatric speciation occurs when two groups of organisms are separated by a physical or geographic barrier. Common examples of these barriers include mountain ranges, oceans, and even large rivers. The isthmus of Panama is a prime example of a geographical barrier and it separates the Atlantic and Pacific oceans.
How can polyploidy cause speciation in plants quizlet?
The result is a diploid gamete that when fused with a haploid gamete produces a fertile offspring. Thus the polyploid has now become reproductively isolated from the original population. The polyploid plant can self-pollinate or it can mate with other polyploid plants. Polyploidy can lead to sympatric speciation.
What is the greatest challenge to a successful sympatric speciation event?
Question: What is the greatest challenge to a successful sympatric speciation event? Geographic isolation of the groups Potential homogenization due to gene flow between groups Disruptive selection on phenotypic traits Genetic drift due to small population size.