Adaptive evolution is often thought of as having a random component and a non- random component. The random component is: Artificial selection Natural selection Mutation Homology Adaptation

Q: Do you think humans can control the effect of genetic drift? Why or why not?

A: Ans- Yes, humans can affect genetic drift. Genetic drift is defined as a change in allele…

Q: Relate Genetic Variations vs Natural Selection?

A: Genetic variation can be defined as the difference in sequences of DNA between individuals in a…

Q: So how can individual selection result in low reproductive rates or short life spans?

A: Individual selection is totally depends upon their adaptations. Selection is the process of…

Q: Why is genetic variation important to populations?

A: Answer

Q: How can natural selection favor different phenotypes at different times?

A: Introduction  Evolution is the key process which regulates the survivability and continuity of…

Q: Why does it take longer to eliminate a recessive allele than a dominant allele?

A: Genes are the hereditary unit of an organism that gets transferred from the parent to the offspring.…

Q: Explain the controlled breeding experiment?

A: Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia. Breed is a…

Q: What Is Random Genetic Drift?

A: The term genetic refers to the genome present in the cells of an organism. Genome is the complete…

Q: Is it true that natural selection allows only the better alleles to be passed onto the next…

A: Darwin stated the theory of natural selection in which he gave the following arguments: First, he…

Q: How Genetic Drift arise ?

A: Genetic drift is characterized as the changes in the allele frequency of the given population. This…

Q: How is evolutionary (genetic) change measured, and how is the cause determined?

A: Evolution can be described as the development of an organism from the ancestral species in response…

Q: What is the long term and short term effects of natural selection on coding and non-coding DNA, the…

A: Natural selection is the word coined by Darwin. It is simply the theory which states that the better…

Q: What’s the paradigm shift from charles darwin theory

A: The three fundamental components of Charles Darwin's theory of evolution were that variation occurs…

Q: Scientific studies have shown that the majority of human genetic differences worldwide exist within…

A: The objective of the question is to determine whether the majority of human genetic differences…

Q: Are dominant traits always more frequent in a population than recessive traits? Is that what…

A: Humans carry 2 copies of each gene on 2 copies of chromosome. Hence the different versions of the…

Q: How Disruptive selection is bidirectional ?

A: Answer- There are three type of ecological selection.  Disruptive Stabilizing DIrectional

Q: Why is a silent mutation ignored by natural selection?

A: Mutation  The changes in the sequence of gene or DNA either by addition or deletion of base pairs…

Q: How did the human race start?

A: Introduction :- The most numerous and ubiquitous species of primates, humans are distinguished by…

Q: What is chemical selection? What hypothesis did Bartel andSzostak test?

A: The chemicals present in a mixture have some special advantageous properties. These properties allow…

Q: if the recessive allele r is lethal, what genotypes will natural selection benefits ?

A: Recessive alleles are nearly tough to completely eradicate from a population since both AA and Aa…

Q: Suppose it is possible to use genetic engineering to make people more intelligent. Do you think this…

A: Recent genetic engineering technology has got miraculous results, which people dreammed for years…

Q: How similar are the genes of different species? Does this reflect how different or similar the…

A: The relationship between the similarity of genes in different species and the similarity of their…

Q: Why differences occurs among populations through Genetic variations?

A: Introduction: Genetics is a branch of biology that deals with the understanding of genes, variation…

Q: Which of the options listed below could represent the PHENOTYPE of an organism? * O Tt, purple O Rr,…

A: Answer- yellow,tall

Q: Our phenotypic traits and personalities come from the expression of our genes. When and how do you…

A: Phenotypic traits are the observable physical and behavioral characteristics of an organism, which…

Q: How many number of genes a Human (Homo sapiens) has ?

A: Genes are the blueprint of all organisms. It is the entire sequence of DNA inherited from one…

Q: at accounts for 100% of a population not being polymorphic? For instance, an entire South American…

A: Genetic polymorphism is a phenomena in which multiple genetic forms are observed in nature. Multiple…

Q: Will a recessive allele that is lethal in the homozygous condition ever be completely removed from a…

A: Natural selection favors the phenotype that is favorable and often the harmful alleles are…

Q: What was Darwin’s theory of natural selection? What evidence since Darwin’s day confirms his theory?

A:

Q: Imagine that genetic technology advances to the point where the genetic profile of an individual can…

A: Each and every live organism on earth contains gene, it may be DNA or RNA, or both. This gene…

Q: Should we genetically engineer humans to remove undesirable traits? Why or why not?

A: In every country, numerous governmental entities regulate the process of genetic engineering. It…

Q: What does “prezygotic” mean?

A: The processes of reproductive isolation are a group of behavioural patterns, physiological…

Q: What is genetic drift?

A: Introduction In this question we will discuss about the genetic drift.

Q: Why is inbreeding not advisable?

A: Inbreeding is the process of mating closely related individuals like brother and sister, father and…

Q: Would it have made a difference if natural selection had acted on the dominant allele instead of the…

A: Dominant over recessive

Q: Are polymorphisms common or rare in natural populations?

A: Polymorphism is an intermittent genetic variation bringing about the event of a few unique…

Q: The next four problems are part of a series. For these problems, see your book for a detailed…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Pre-Darwinian Concepts