Hello, I need help answering number 20(including the sub-parts). Pls and thank you  20. A.)T / F Both negative frequency-dependent selection and positive frequency-dependent selection act to maintain genetic polymorphism. B.) T / F The mass extinction at the end of the Cretaceous caused the extinction of all non-avian dinosaurs. C.) T / F Natural selection can occur without any evolution in the next generation if individual differences in the trait are not heritable.

Q: Define "homologous structures," and explain how they help support evolutionary theory.

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: Mosquitoes can carry and transmit many diseases to humans. In the past, the insecticide DDT was…

A: Mosquitoes (Anopheles funestus) are the disease's vectors, and most malaria-prevention methods rely…

Q: The image depicts the anatomical structure of the forelimb of a dolphin and a bat, both mammals.…

A: Homologous organs : Homology was introduced by Charles Darwin.  These organs are referred to the…

Q: Effect of geographic distance from Africa on human genetic diversity - Why do humans have a low…

A: Genetic Diversity is the diversity of genetic characteristics expressed or recessive within a…

Q: What process results in the appearance of similar traits in two species that share a common…

A: Evoluion is heritable change in charecteristics of biological population, which keep on take place…

Q: DNA sequences from randomly chosen individuals from the two populations are shown here – A1…

A: Genetic variation is how much the genotype of an organism differs from other organisms. The genotype…

Q: The study featured in "This is a Truly Lousy Experiment" relied on well-established conclusions from…

A: Evolution by natural selection - through natural selection favourable characters pass on to next…

Q: Direction: Match the following terms in the other column. Write your answer on the space given.…

A: Answer

Q: n class we investigated the reason cystic fibrosis is maintained in the human population in higher…

A: Cystic fibrosis is caused by mutation in two copies of the CFTR gene.

Q: 25) What was a major gap in evolutionary theory when Darwin published "The origin of species by…

A: Introduction All life on earth began from the universal last common ancestor which lived 3 to 4…

Q: Write TRUE if the statement is correct or FALSE if the statement is incorrect.   1. As recently as…

A: Evolutionary studies are done in order to find the interrelations between different groups of…

Q: Review the process of natural selection. Use the steps to explain how PCB resistance became so…

A: Since you have posted multiple questions, Am answering the first question for you. For the remaining…

Q: 20. A.) T / F: Synonymous and non-synonymous mutations mainly evolve via purifying natural…

A: Natural selection is the key to evolution. The difference in genotype from generation gives rise to…

Q: Hello, I need help answering number 1 (INCLUDING SUB-PARTS) true or false questions. Pls and thank…

A: Adaptive evolution is evolutionary changes in an organism that make the organisms better adapted to…

Q: POST QUIZ: Write true if the statement is true or false if the statement is false. 1. As recently as…

A: Evolution is defined as the process of change in  features and their characteristics  of the species…

Q: 1. Which organisms in the cladogram in figure 1 have fur and mammary glands? 2. Which organisms in…

A: There are few important points that are as follows : We know that the evolutionary relationship of…

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

A: The inheritable disease that caused vision loss more in males and less in females is Leber…

Q: The significance of genetic polymorphism in evolution relies on the fact that: a) such genetic…

A: Dear student, as per our honor code we are allowed to answer one question at a time. As each MCQ is…

Q: Discuss why Miller-Urey experiment was important to support the theory of evolution?

A: The first organisms to have evolved on the earth were heterotrophic and anaerobic. As there was no…

Q: Some people think that many of our uniquely human traits arose by sexual selection. Over thousands…

A: Sexual selection is a kind of natural selection in which either males or females choose their…

Q: You conduct an exercišé iñ the conditions under which survival of snails is selective-that is,…

A: The answer to the question is: Yes, because there was a change in the mean shell thickness.

Q: The neutral theory of molecular evolution is now accepted as part of the theory of evolution by…

A: According to the neutral theory of molecular evolution, the changes that lead to evolution happens…

Q: Why do systems of classification keep on changing? Do you see this as good or bad? Why do you say…

A: Introduction Classification system:- The classification system is the establishment of a…

Q: why Charles Darwin's evolution by natural selection theory is correct,

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: The genome size of humans and chimpanzees are both approximately 3 billion base pairs, sharing about…

A: It is the process whereby an organism better adapts to their environment tend to survive and produce…

Q: A.) Study of mutations reveals that: a.) mutations that lead to shortened proteins often have high…

A: NOTE:- "As you have posted multiple questions under one, we will solve the first part for you, to…

Q: The Amish community in Eastern Pennsylvania stemmed from a small closed population of around 200…

A: The bottleneck effect is an evolutionary phenomenon where a population reduces significantly to a…

Q: How did Spiegelman et al.' s experiments in 1967 & 1970 on the origins of natural selection provide…

A: The RNA World hypothesis would be confirmed if experimental evidence indicated that a completely…

Q: Charles Darwin is responsible for which of the following?   Being the first to propose the theory…

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: 34. A.) T / F: Both negative frequency-dependent selection and positive frequency-dependent…

A: 34. A.) Frequency-dependent selection is the process through which species evolve based on the…

Q: The American flying squirrel and the flying phalanger of Australia live in similar environments and…

A: Evolution is the process of gradual changes in organisms to form more and more complex form over a…

Q: As we go back in time, the number of our direct ancestors' increases but the number of humans who…

A: Coalescence: it is used in evolutionary biology to determine the distribution of gene divergence.

Q: Fixity of Species refers to… Group of answer choices A-the theory that species exist at a fixed…

A: The species are fixed was the idea that was believed before Darwin's theory in the 18th century.…

Q: Some human traits may have arisen by sexual selection. Over thousands of years, women attracted to…

A: Evolution involves “descent with modifications” which results in the alteration of characteristics…

Q: Please match: 12345 Allele 12345 Analogous 12345 Sympatric 12345 Homologous 12345 Allopatric…

A: Evolution is the phenomenon of change in the characteristics of a species over several generations…

Q: Wyckoff et al. (2000. Nature 403:304-309) have proposed that some human male…

A: According to the evolutionary theory of natural selection, evolutionary changes occurs through…

Q: Revise the passage Darwin is best known for his Theory of Inheritance of Acquired Characteristics,…

A: Darwin and Lamarck proposed theories explaining evolution.  Darwin proposed the theory of natural…

Q: How do we detect relatedness among species?

A: Evolutionary relationships are patterns to understand the descent of organisms.

Q: At least 3 paragraphs on this, please Only when extensive genetic data became available were…

A: Proof from fossils, proteins and hereditary investigations shows that people and chimpanzees had a…

Q: What is adaptive radiation?     Large-scale evolutionary patterns and trends in speciation     The…

A: Evolution is defined as the change in trait of a species over a period of time.

Q: Your descendants have fortunately inherited your fascination with rodent genetics. Fifty thousand…

A: The given DNA sequences from randomly chosen individuals from the two populations are : A1   ATAAGA…

Q: Visitors to Plimouth Plantation are often surprised by the low ceilings and narrow door frames of…

A: The biological evolution of organisms is described as descent with modification that includes…

Q: This is a two part question, please write two separate essays, one for each part. Part 1: what is…

A: Natural selection is a selective force acting against an organism to reproduce and survive because…

Q: How do we detect relatedness among species? subject is evolution subject please include concept of…

A: Phylogenetics is the study of evolutionary development and relationships among different organisms.…

Q: Ka/Ks values for each node in the tree Node# Ka/Ks Branch1 Ka Branch1 Ks Branch1 Ka/Ks Branch2 Ka…

A: Evolutionary tree is a statistical tree that is used to frame a relationship between the evolution…

Q: Changes in environmental conditions can render previous adaptations as maladaptations. Describe an…

A: Introduction A maladaptation is a characteristic that is (or has been) more harmful than useful in…

Q: Write true if the statement is true or false if the statement is false.

A: Note: Since you have posted multiple questions, we will be answering the first 3 for you. If you…

Q: Why is it that the evolution of skin color is considered a case of natural selection? Group of…

A: Natural selection is the process of selecting individuals after undergoing competition.In this…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.