Many new species of desert have arisen from a population which was introduced into the
American southwest. This example best describes: allopatric speciation. sympatric speciation.
microevolution. adaptive radiation. the effect of climatic change. What is the only source of all
new ? genetic drift gene flew genetic polymorphism mutation natural selection Extensive
data from hospitals have shown that born with intermediate weights are the ones most likely to
survive. This is a classic example of which type of selection? stabilizing selection directional
selection no selection disruptive selection natural selection What are considered to be the two
most important factors that have been involved in past mass ? glaciers and earthquakes disease
and parasites plate tectonics and climatic factors fire and weather events environmental and
biological factors Which was a possible source of high energy no early. Earth that likely
contributed to the origin of
Solution
11. Adaptive radiation: Adaptive radiation is when a species diversify to many different species
from one ancestral species when there is a change in the environment. Change in environment
would be when they are exposed to a different environment like in this case, to a new land.
Change in the environment presents new challenges and advantages in term of resources,
climate, predators etc. Such changes force a species to evolve to adapt.
12. Mutation: Mutation is change in the genetic code which can occur due to many reasons
which change the basic DNA code as compared to what the parent cell has. Mutation can give
the cell new characteristics or even hamper basic functions of a cell or an organism. Hence,
mutation is the only source of change in alleles
Genetic drift can happen only with mutation. Gene flow is basically the inheritance of genes
from the parents to offspring. Genetic polymorphism does not guarantee change in phenotype,
hence not change in alleles. Natural selection is basically survival of the fittest.
13. Stabilizing selection : It is when for a particular trait, the genetic diversity decreases and the
population mean stabilizes. It is assumed to be the most common type of natural selection. When
it comes to phenotypes it supports the intermediate variations.
Human babies who are underweight are susceptible to diseases and lose heat more quickly and
have high mortality rate and similarly for the babies with more than normal weight, which are
difficult to deliver..
Many new species of desert have arisen from a population which was .pdf
1. Many new species of desert have arisen from a population which was introduced into the
American southwest. This example best describes: allopatric speciation. sympatric speciation.
microevolution. adaptive radiation. the effect of climatic change. What is the only source of all
new ? genetic drift gene flew genetic polymorphism mutation natural selection Extensive
data from hospitals have shown that born with intermediate weights are the ones most likely to
survive. This is a classic example of which type of selection? stabilizing selection directional
selection no selection disruptive selection natural selection What are considered to be the two
most important factors that have been involved in past mass ? glaciers and earthquakes disease
and parasites plate tectonics and climatic factors fire and weather events environmental and
biological factors Which was a possible source of high energy no early. Earth that likely
contributed to the origin of
Solution
11. Adaptive radiation: Adaptive radiation is when a species diversify to many different species
from one ancestral species when there is a change in the environment. Change in environment
would be when they are exposed to a different environment like in this case, to a new land.
Change in the environment presents new challenges and advantages in term of resources,
climate, predators etc. Such changes force a species to evolve to adapt.
12. Mutation: Mutation is change in the genetic code which can occur due to many reasons
which change the basic DNA code as compared to what the parent cell has. Mutation can give
the cell new characteristics or even hamper basic functions of a cell or an organism. Hence,
mutation is the only source of change in alleles
Genetic drift can happen only with mutation. Gene flow is basically the inheritance of genes
from the parents to offspring. Genetic polymorphism does not guarantee change in phenotype,
hence not change in alleles. Natural selection is basically survival of the fittest.
13. Stabilizing selection : It is when for a particular trait, the genetic diversity decreases and the
population mean stabilizes. It is assumed to be the most common type of natural selection. When
it comes to phenotypes it supports the intermediate variations.
Human babies who are underweight are susceptible to diseases and lose heat more quickly and
have high mortality rate and similarly for the babies with more than normal weight, which are
difficult to deliver.
