North American desert horned lizards have the unusual ability to flood their ocular sinuses with blood. By contracting muscles within their eyes, the lizards can rupture their sinus membranes and cause blood to squirt from their eye socket. This unique behaviour is used as a defense strategy. For natural selection to select for this trait, what must be true about this behaviour?

Q: If natural selection has no foresight,how can it explain features that seem to prepare organisms for…

A: The theory of natural selection accounts for the adaptations of organisms. It tells us about all the…

Q: Which of the following is not a trait on which natural selection can act? a size of ears b…

A: Theory of natural selection was given by Charles Darwin. According to this theory those individuals…

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: 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: It has taken millions of years for the ancestors of whales to change into what we know today, as…

A: It has taken millions of years for whales to evolve. From the diagram, it is observed that a…

Q: How could natural selection have led to the evolution of adaptationssuch as camouflaging coat color…

A: Camouflage means the use of combinations, coloration or illumination for concealment by making…

Q: Which factors were determined to directly cause the loss of skin pigmentation in humans as a result…

A: Natural selection is defiend as the selection of individuals having a particular trait as compared…

Q: Many people assume that modern medicine has eliminated natural selection in humans. What are three…

A: Natural selection is the process through which populations  adapt and change. Individuals in a…

Q: Deer mice are usually found in the woods and are dark brown in color. The deer mice that live in the…

A: Natural selection is the adaptation and alteration of populations of living organisms. Individuals…

Q: Imagine that, in the near future, humans will have to find a suitable home on a new planet. What are…

A: If we want to survive on some other plants following things are must needed for our survival…

Q: Evolutionary biologists often say that evolution “selects for outcomes” not for the particular…

A: Organisms do evolve based on the environmental causes to sustain in the dynamic and competitive…

Q: Which concepts characterized Lamarck's hypothesis about evolution? Select all that apply.       Over…

A: Lamarck"s theory suggested the theory of use and disuse of organs which meant that the organs which…

Q: Which one of the following statements is true? Multiple Choice Organisms always evolve the…

A: Evolution is the change in the characteristics of the individual over several generations. These…

Q: Which is a question Lamarck MOST LIKELY would have asked when developing his evolutionary…

A: Lamarck proposed theories like the inheritance of acquired characters, use and disuse of organs, and…

Q: In an evolutionary perspective, what would happen to the population of angry clip birds after 1000…

A: Variation is vital for species survival because it allows the organism to overcome adversity.…

Q: Which of the following is a conclusion Thomas Malthus made that influenced Charles Darwin's thoughts…

A: Thomas Malthus stated that the species can populate to any extent but the resources on the earth are…

Q: Honey possums lick nectar from flowers using a long tongue made of soft muscle. Butterflies lick…

A: Like nectar-eating birds honey possums  have bristles on their tongue tip,which used to gather…

Q: Compare and contrast the five patterns of natural selection that drive adaptation.

A: The concept of natural selection was first explained by Charles Darwin. According to this concept…

Q: Which of the following statements is inaccurate? Multiple choice (one answer is correct)   a.The…

A: Each of the statements is justified either correct or incorrect with proper explanation in step 2.

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

A: Genetic modifications or adaptations preventing insecticide from working inside a mosquito on its…

Q: Darwin’s finches have different beaks in terms of size and shape to be able to eat different food…

A: Darwin proposed the theory of natural selection to explain the process of evolution.

Q: A number of behaviors that exhibit cultural evolution, such as tool-using, also have genes that…

A: INTRODUCTION Because culture is both constrained and promoted by the human genome, human cognitive,…

Q: In the course of human evolution, we can see in the fossil record a tendency towards increasingly…

A: Selection is the result of all combined forces that cause survival difference as well as…

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

A: Dominant over recessive

Q: One of the lines of evidence that led Darwin to the theory of natural selection was his study of…

A: People have affected their environment and the species with which they share it. One of the…

Q: According to Darwin, why do certain traits become more common in a population over time? (Hint-…

A: Charles Darwin proposed the theory of evolution by means of natural selection after his voyage on…

Q: Does natural selection occur when which of the following conditions are met? A. Variations between…

A: Charles Darwin was first who thoroughly clarified the principles of "Natural selection". It is the…

Q: Consider an elephants long trunk. Assuming elephant trunks started out short, explain how darwin…

A: Darwin  and Lamarck both explained the evolution process but both speculated it in a different…

Q: This spectacular animal is a Lesser Bird of Paradise, Paradisea minor, from the highlands of Papua…

A: Introduction: The largest island of new guinea is the center of diversity for the bird of paradise.…

Q: In natural selection, what must be TRUE of traits that are passed down through generations? * The…

A: The theory of natural selection was given by Charles Darwin. According to this theory the  traits…

Q: Why don’t the shorter neck giraffes feed on grasses and lower vegetation?   How would the shorter…

A: Since there are multiple questions in this particular question, I will answer the three sub parts…

Q: Which question below directly corresponds to whether Lamarck or Darwin are correct about their…

A: Lamarck's theory proposed that the giraffes were originally had short necked. They repeatedly…

Q: Assume that a lineage of rainbow trout accumulates mutations over time that make the trout a uniform…

A: Rainbow trout are beautiful fish that differ greatly according to climate, age, and condition. They…

Q: Red-eyed tree frog eggs can hatch up to two days earlier than average when they detect vibrations.…

A: Answer:  NATURAL SELECTION = It is the process in which population of species are adapt and change…

Q: Which of the following is NOT one of the three features of evolution by natural selection? Offspring…

A: Evolution is the change in the characteristics of the individual over several generations. These…

Q: This spectacular animal is a Lesser Bird of Paradise, Paradisea minor, from the highlands of Papua…

A: This bird belongs to family Paradisaeidae and is of class aves  In this species the males are…

Q: How can a shift in the proportion of genes in a population could lead to the evolution of a new…

A: Introduction: Evolution of a new species or a whole population can caused by environmental as well…

Q: Suppose a farmer puts antibiotics in meat that he leaves out for lion cubs. The antibiotics in the…

A: Cubs survive to adulthood due to resistance provided by antibiotics.

Q: During drought years on the Galapagos, small, easily eaten seeds become rare leaving only large,…

A: Darwin proposed a theory called natural selection to describe evolution. According to his theory,…

Q: Which of the following best describes natural selection? O It is a guess made by scientists about…

A: Evolution is the process by which new species develop from existing species. It is the key factor…

Q: Some of the mechanisms that help repair wounds or fight off infection can result in cancer when…

A: Evolution hasn't eliminated the process of ageing.

Q: Is natural selection only a negative process that removes nonadapted and lesser adapted forms?…

A: The answer is given below.

Q: Darwin was not the first to propose a mechanism for evolution. Lamarck proposed “acquired…

A: Despite the fact that the name "Lamarck" is sometimes confused with the phrase "evolution," the…

Q: When the population of twenty blue grasshoppers arrived on that new island (called Greenland), they…

A: Introduction loss of genetic variation occurs in founder effect.

Q: Adaptation and Evolution If you were to present that theme, which representative organisms would you…

A: In evolutionary biology, adaptation refers to the process that a specie goes through, to become…

Q: b) Evolutionary biologists often say that evolution "selects for outcomes" not for the particular…

A: Mutation is the first step of evolution. Not all variants affect evolution only hereditary variants…

Q: A farmer uses DDT to kill insects in his field. The first year nearly all of the insects were…

A: The theory of evolution basically deals with the concept of how such a large diversity of species…

Q: Why is natural selection the only agent of evolution that consistently produces adaptation?

A: Evolution is the change of biological populations' heritable features across generations. Mutation,…

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth.  Human evolution is an outcome of interaction among the following processes: