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Why did the 1977 drought on Daphne Major lead to evolutionary change in the medium ground finch population?
Wiki User
∙ 12y ago
Medium ground finches with large and deep beaks had high biological fitness during the drought.
Wiki User
∙ 12y ago
The 1977 drought on Daphne Major resulted in a scarcity of small soft seeds, the primary food source for medium ground finches. This forced the finches to adapt by developing larger beaks to better crack open harder seeds, leading to evolutionary change in the population. Finches with larger beaks were more successful at obtaining food and had a higher chance of survival, passing on this trait to future generations.
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How did the drought on the Great Plains change population distribution in the country?
The drought on the Great Plains led to the Dust Bowl in the 1930s, which caused widespread crop failures and forced many farmers to migrate to other regions in search of work. This resulted in a shift in population distribution, with many people leaving the affected areas for cities and other parts of the country.
What percentage of countries suffer from drought?
Approximately 14% of countries worldwide are affected by drought, with regions such as the Middle East, Africa, and Australia experiencing higher levels of drought vulnerability. Climate change is expected to exacerbate this issue in the coming years.
What is a long-term solution to the drought in Africa?
Implementing sustainable water management practices such as rainwater harvesting, building infrastructure for water storage and irrigation, promoting drought-resistant crops, and providing education and support to farmers on sustainable agricultural practices can help mitigate the impact of drought in Africa in the long term. Additionally, addressing issues of deforestation and climate change can also contribute to long-term solutions for drought.
What is the main cause of drought in the sahel?
The main cause of drought in the Sahel region is the variability of rainfall patterns, which are influenced by factors such as climate change, ocean temperatures, and atmospheric circulation patterns. Human activities, such as deforestation and overgrazing, can also contribute to desertification and exacerbate drought conditions in the region.
Why is the Philippines experience drought some parts of the year?
The Philippines experiences drought in some parts of the year due to factors such as the El Niño weather phenomenon, reduced rainfall during the dry season, and deforestation leading to water scarcity. Climate change can also play a role in exacerbating drought conditions in the country.
Which combination of characteristics in a poplulation would provide the greatest potential for evolutionary change?
The characteristic of a population that would most likely indicate the lowest potential for evolutionary change in that population would be asexual reproduction. This is because the offspring are identical to the parent.
What characteristics of a population would most likely indicate the lowest potential for evolutionary change in that population?
Asexual reproduction and few mutations
Living things have a long history of change?
evolutionary change.
Is a drought a chemical or a physical change?
Drought is not a change, is the result of a physical process.
Which characteristics of a populations would most likely indicate the lowest potential for evolutionary change in that population?
A large population size, low mutation rate, absence of selection pressure, and high gene flow between populations would indicate lower potential for evolutionary change as these factors can limit the introduction of new genetic variation and the accumulation of evolutionary adaptations.
What is Phyletic change?
Evolutionary change is a process where things change over a period of time. Such as going from a candle, to a light bulb.
What can lead scientist to change an evolutionary tree?
What can lead scientists to change an evolutionary tree?
What is observed evolutionary change?
Morphological and behavioral changes that speak to, the change in allele frequency over time in that population of organisms. Go here and check observed speciation section.talkorigins.org
What are the raw material of evolutionary change?
Mutations are considered as the raw materials of evolutionary change. They are structural changes in the DNA sequence of an organism.
What do scientists now think about pace of evolutionary change?
A combination of both gradualism and punctuated equilibrium best explains the pace of evolutionary change
What is adaptation in biology?
In bio, adaptation usually refers to an evolutionary change an organism has made to better suit its environment. This change is a process and usually takes thousands of years. Evolutionary adaptation is not to be confused with acclimation, which is when an organism simply gets used to its environment during its lifetime and makes no evolutionary changes.
Is the human brain finished evolving?
Possible not, but if we were in a evolutionary cul-de-sac how would we know? ( evolution is only the change in allele frequency over time in a population of organisms. It is blind, has no direction and is not progressive or linear. Evolutionary predictions are by definition impossible to make )
