What Is The Evolution Of The Modern Horse With A Single Hoof On Each Limb From A Dog-Sized Ancestral Species With Multiple Digits An Example Of?
The evolution of the modern horse with a single hoof on each limb from a dog-sized ancestral species with multiple digits is an example of macro evolution.
What is the mutation known as trisomy 21 quizlet?
The mutation known as trisomy 21, in which an extra copy of chromosome 21 is present, is more commonly known as: Down syndrome.
Which of the following is an example of balanced polymorphism?
Sickle Cell Disease
It illustrates balanced polymorphism because carriers are resistant to malaria, an infection by the parasite Plasmodium falciparum that causes cycles of chills and fever.
What is another name for the evolutionary force called gene flow?
Gene flow is also called gene migration. Gene flow is the transfer of genetic material from one population to another. Gene flow can take place between two populations of the same species through migration, and is mediated by reproduction and vertical gene transfer from parent to offspring.
What are all of the alleles contained within a group of interbreeding individuals together known as?
The collection of all the genes and the various alternate or allelic forms of those genes within a population is called its gene pool.
Which force of evolution has the most potential to affect evolution?
Natural selection
Natural selection is the most important force of evolution where the organisms capable to survive and reproduce with changing environmental conditions are selected by the nature but the incapable ones are eliminated.
On what scale does evolution occur?
These two extremes represent classic examples of micro- and macroevolution. Microevolution happens on a small scale (within a single population), while macroevolution happens on a scale that transcends the boundaries of a single species.
Which genetic disorder results from a trisomy of chromosome 21 it is also called trisomy 21 which characterized certain birth defects learning problems and facial features?
Down syndrome is a genetic disorder. It is also called trisomy 21. It includes certain birth defects, learning problems, and facial features. A child with Down syndrome also may have heart defects and problems with vision and hearing.
Which type of mutation causes Down’s syndrome trisomy 21 )?
Down syndrome is usually caused by an error in cell division called “nondisjunction.” Nondisjunction results in an embryo with three copies of chromosome 21 instead of the usual two. Prior to or at conception, a pair of 21st chromosomes in either the sperm or the egg fails to separate.
What are the 4 types of genetic polymorphism?
Various types of polymorphisms include:
- single nucleotide polymorphisms (SNPs)
- small-scale insertions/deletions.
- polymorphic repetitive elements.
- microsatellite variation.
What is convergent evolution?
Convergent evolution occurs when species occupy similar ecological niches and adapt in similar ways in response to similar selective pressures. Traits that arise through convergent evolution are referred to as ‘analogous structures’. They are contrasted with ‘homologous structures’, which have a common origin.
What is an example of polymorphism in animals?
One example of polymorphism can be observed in jaguars. This species has more than one trait in its skin coloring. You must have seen jaguars with dark spots or light spots. This is because they have different morphs for their skin color.
What are the 4 processes of evolution?
There are four forces of evolution: mutation, gene flow, genetic drift, and natural selection.
What is genetic drift example?
Genetic Drift Example
Consider a population of rabbits with brown fur and white fur, white fur being the dominant allele. Due to genetic drift, only the brown population might remain, with all the white ones eliminated. A couple with brown and blue eyes has children with brown or blue eyes.
What is the scientific term for the movement of genetic material from one population to another?
Gene flow — also called migration — is any movement of individuals, and/or the genetic material they carry, from one population to another.
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.
What is the appropriate term for a group of all the individuals that can mate with each other living within a specified area?
Key terms
| Term | Meaning |
|---|---|
| Organism | An individual living thing |
| Species | A group of similar organisms that can mate and produce fertile offspring |
| Population | A group of individuals that belong in the same species and live in the same area |
| Community | All the populations of all the different species that live together in a particular area |
Which term is used to describe an individual with two of the same allele for a characteristic?
An individual inherits two alleles, one from each parent, for any given genomic location where such variation exists. If the two alleles are the same, the individual is homozygous for that allele. If the alleles are different, the individual is heterozygous.
What are the main types of evolution?
Factors such as environment and predation pressures can have different effects on the ways in which species exposed to them evolve. shows the three main types of evolution: divergent, convergent, and parallel evolution.
What mechanism of evolution is this?
Natural selection is considered the main mechanism that causes populations to evolve.
What is an example of mutation in evolution?
A classic example of a mutation in evolution in humans is the mutation in the gene HbS which makes RBC. One copy of this gene provides resistance to malaria but two copies of this gene cause sickle cell anemia.
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