Narwhals are related to other whales. The extreme phenotype of the tusk demonstrates which type of selection?

Q: What is disruptive selection ?

A: Disruptive selection describes changes in population genetics in which extreme values for a…

Q: Steven Frank and Laurence Hurst argued that a cytoplasmically inherited mutation in humans that has…

A: The mutation is the sudden deleterious effects in the DNA sequences, they can arise when the DNA is…

Q: How does competition influence natural selection? Is the presence of competitors a selective force?

A: Competition is of two types - intraspecific and interspecific. intraspecific competition occurs…

Q: How would you determine that the sexual dimorphism in throat patch coloration in male hummingbirds…

A: Sexual dimorphism is known as a condition in which the two sexes that belong to the same species are…

Q: Which node, 1-8, represents the most recent common ancestor of the Gray Wolf and the Domestic dog?…

A: Monophyletic taxon is one that includes the most recent common ancestor of a group of organisms…

Q: There are many inorganic energy sources (potential electron donors) in an animal digestive tract.…

A: Bacterial symbionts are the one which reside in human or animal body either as mutual or commensal…

Q: Satellite and attached male horseshoe crabs do not have the same reproductive success. Why hasn’t…

A: Satellite male These are the male that waits near male to intercept females lured to the other…

Q: Organisms with high ________are more likely to survive and reproduce. 2. Sharp teeth and claws are…

A: Survival and reproduction all depends on the organisms and kind of traits it possess. If the…

Q: If a species of ground finch with variation in beak size suddenly had to all compete for large hard…

A: Natural selection is the basis of evolution that was proposed by Charles Darwin. The process of…

Q: Do you believe that because insect beak length has changed in opposite directions in the Florida and…

A: Natural selection leads to evolution. It is a result of change in phenotypic characteristics of…

Q: Bateman (1948) and Trivers (1972) came to the conclusion that sexual selection is typically a more…

A: Sexual selection is a type of natural selection for meeting success of any species. In this type of…

Q: Which of the following decreases the evolutionary fitness in people with darker skin color? Assume…

A: The vitamin D–folate hypothesis explains the evolution of human skin pigmentation. It is obvious…

Q: Has the Pingelapese population evolved? Explain. (Hint: Does inbreeding cause a change in allele…

A: Pingelapese population is not in Hardy-Weinberg equilibrium. This is because Hardy-Weinberg…

Q: Which microevolutionary force leads to adaptive changes in allele frequencies?

A: There are few evolutionary forces which changes the allele in population Mutation -  abbreviation…

Q: Which of the following does not support Hoekstra's hypothesis for the evolution of coat color in…

A: *Hopi Hoekstra tested that beach and inland mice coloration will provide camouflage which protect…

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: Describe the competing selective forces acting on peacock tails. Together, do these selective forces…

A: Selective force is the stabilizing force that imply on both the sexes of individual, when any sex of…

Q: How do discoveries mentioned in “First Africa”, then the World fit Assimilation to be a skilled…

A: According to several "evolutionary theories", living creatures change their physical and anatomical…

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: Which of the following traits would you expect to be under weakest selection? Explain your answer.…

A: Natural selection can be defined as sum of natural forces that causes differntial reproduction and…

Q: What barriers prevent wood frogs and leopard frogs from interbreeding in nature?

A: Introduction: Evolution refers to the change in the species with time. Every single species living…

Q: Sexual selection tends to cause bigger size,more elaborate weaponry, or brighter colors in males. Is…

A: Natural selection is the method by which a population of living organisms accommodates and develops…

Q: Which of the following traits are unique to only Homo sapiens and not to Australopithecus or…

A: Australopithecus is a genus of early hominins that existed in Africa during the Late Pliocene and…

Q: From which of the following areas in western Europe were remains recovered that may offer evidence…

A: Neanderthals are considered to be an extinct species of early humans. They inhabited Eurasia and has…

Q: How can we detect recent strong selection in the human genome? Explain using the recent positive…

A:

Q: The retention of juvenile characteristics into adulthood is known as_______________ Examples of this…

A: Juvenile phase is that phase in which organism has not acquired sexual maturity yet.…

Q: What type of geographic barriers could have led to the speciation of finch in the Galápagos Islands?

A: Galapagos is a small cluster of islands present in Ecuador Province of the American subcontinent. It…

Q: Using evidence from the text, how can natural selection determine the survival of humans during the…

A: Claim, evidence, and reasoning (CER format) are used to write a scientific explanation. A claim is a…

Q: Which of the following derived traits is unique to New World Monkeys, who live in the trees? Group…

A: There are some changes and adaptions of new world monkeys in comparison to the old world monkey. Old…

Q: Explain what is meant by Cultural Evolution (with examples) and discuss why we say it occurs by…

A: " Cultural evolution " is the possibility that human social (cultural) change– – that is, changes in…

Q: Simmons and Scheepers in their article Winning by a Neck present evidence that the long neck of the…

A: In a particular ecosystem, it is important to evolve along with the time that may help to live and…

Q: How do the events surrounding the Peppered Moth during the industrial era in Great Britain support…

A: The mechanism of natural selection involves the adaptation and modification of living organism…

Q: Did male H. sapiens hybridize with Neanderthal females that then back-crossed with modern humans?…

A: Homo sapiens is the most common and distributed primate species, distinguished by bipedality and big…

Q: how has natural selection affected the bunny population and resulted in evolution of this species?

A: Microevolution (changes in allele frequencies) can occur as a result of natural selection, with…

Q: How were researchers able to determine that Soapberry bug mouthparts had evolved to be shorter in…

A: given here are some of the statements about soapberry bug mouthparts and the following among them is…

Q: How are Belyaev and Trut’s breeding practices similar to, and how do they differ from,the way…

A: Natural selection is the principle involves variations in the inherited characteristics that…

Q: Assuming the Denisovans, Neanderthals, and humans were able to interbreed, what does this tell you…

A: Denisovans are group of extinct humans. They first identified based upon DNA sequences from…

Q: In 1959 Daniel Yuh set up a long-term study of cataloging the blood types of a group of foragers in…

A: Genetics is a term that refers to the study of genes and their roles in inheritance - in other…

Q: What are some of the traits present in the newt population described in the article? How might these…

A: Predation is a biological interaction where one organism, the predator, kills and eats another…

Q: What is the biological definition of a species? A) A group of individuals that can breed and…

A: Introduction: The art to identify differences among organisms and place them into groups reflecting…

Q: A polar bear is leaving the ice caps because they are melting. The polar bear enters a wooded area…

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

Q: a) Which species is more closely related to the Gray wolf, the Maned Wolf or the jackal (or are they…

A: To determine: Gray wolf is related to - maned wolf or jackal Jackal is related to - maned wolf or…

Q: What is the one species that has shown the clearest examples of Group Selection?

A: Group selection is an evolutionary selection favoring a gene because of its benefits to a group,…

Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.