Some uninformed people might argue that studying the development of an obscure little fish like the threespine stickleback is a waste of time and money. Why would biologists study the genes that control development in stickleback fish? Give some reasons

Q: Birds that do not receive adequate nutrition during development sing less often and for shorter…

A: Singing birds Singing birds are the birds that sing songs. Not every bird sings and hence every bird…

Q: An evolutionary model of animal development explains how now gonotio

A: The evolutionary model of animal development can be explained on the basis of the salient features…

Q: explain how different types of development patterns (metamorphosis) in insects contribute to the…

A: Metamorphosis can be defined as the biological process by which an animal physically develops after…

Q: Explain why geneticists use model organisms to study development.

A: Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity…

Q: What are the difference of bodily functions of cockroach, toad, and mouse on; A. Reproduction and…

A: Cockroaches can withstand doses of radiation that would be lethal to humans. They can hold their…

Q: Compare how natural selection might favor the reduction and loss of limbs in snakes versus lizards…

A: The concept of natural selection was given by Darwin. Acording to this concept  some traits are…

Q: Nearly all mammals require sleep, explain how the lack of sleep can change the fitness of an…

A: Sleep is assumed to be fundamental to the entire animal kingdom. There are various environmental…

Q: Which of these characteristics best promoted the survival of offspring in reptiles, birds, and…

A: Reptiles are vertebrates that are covered in special skin made up of scales or bony plates. They are…

Q: Why is the rat a good model system for studying human anatomy and physiology?

A: The group of multicellular and heterotrophic organisms belonging to the kingdom Animalia is called…

Q: Of all birds, the flightless kiwi has the highest proportion of yolk in its eggs and the longest…

A: Eggs are the products of fertilization and house the developing embryo .

Q: Indicate the genetic behavior of the different strains of honeybees in the wild

A: INTRODUCTION The Three Bees - sorts of honey bees during a hive. There are differing types of bees…

Q: What is migration? Why do animals show this phenomenon?

A: Animal migration is mainly due to seasonal changes and it is the most common form of migration.…

Q: What selective advantage does each of the following traits provide to humans? (a) a large brain…

A: Evolution refers to a process of changes that occur in the heritable characters of living organisms…

Q: Which statement regarding the differences between frogs and mammals is TRUE when comparing model…

A: Eggs are typically spherical or ovoid with a diameter of about 0.1 mm in humans and 1 to 2 mm in…

Q: more

A: Paedorphosis is the retention of some ancestral traits which are present in juvenile.

Q: What are the drawbacks of drawing parallels between nonhuman primate behavior and human behavior?

A: Introduction  Primates are eutherian mammals that belong to the Primates taxonomic order. Primates…

Q: Hox genes code for structural proteins* that affect the anterior-posterior axis during development.…

A: Hox genes are a subset of the homeotic gene that is a group of the related gene specifying the body…

Q: Scientists compare the structures of a chicken embryo and a human embryo at the same stage of…

A: Scientists analyse embryos from various organisms to determine how closely they are related. Species…

Q: What was Xu Xing's original hypothesis for how flight evolved in birds?

A: Birds are unique among terrestrial beings. They are the only class of animals that can fly. Though…

Q: Which of the following statements about gene imprinting is correct? (a) Gene imprinting is a male…

A: The basic structural and functional unit of heredity is the gene. They carry genetic information in…

Q: How does a bilateral symmetry and an orthogonal nervous system design contribute to reproductive…

A: Introduction Bilateral Symmetry is a basic body plan in which the organism's left and right sides…

Q: Why some animals provide parental care while some other like…

A: Parental care evolution is considered beneficial in ecology, if it facilitates offspring performance…

Q: Design a simple hypothetical experiment to answer a question you have about human development.…

A: Introduction A hypothetical experiment is a thought context in which a hypothesis, idea, or…

Q: How do imprinting in geese and song development in sparrows differwith regard to the resulting…

A: The behavioral pattern of offspring of many species are dependent and influenced by the environment…

Q: explain how humans are related to each of the following animals by indicating the level of…

A: Traits -- A trait is a specific characteristics of an organism , term phenotype can be used in place…

Q: Dogs have a reduced nonfunctional digit on their paws known as a dewclaw what is this example of

A: Vestigial structures are structures that lost their functionality over the course of evolution.

Q: Suppose a population had three female mice with the following characteristics: Color of Fur White…

A: Evolution is the constant going process in which an organism tends to incorporate changes in itself…

Q: Humans are classified in the group of vertebrates known as mammals. Which of the following traits…

A: Mammals are the organisms which belong to the phylum chordate that is they contain vertebrates. The…

Q: What selective advantage does each of the following traits provide to humans? a) large brain…

A: BASIC INFORMATION  EVOLUTION The concept was given by Charles Darwin. It is basically change in the…

Q: The studies of in-utero exposure to hormones in rodents demonstrate that.. Male rodents always…

A: Hormones are the organic substances that are produced in small amounts by specific glands, which are…

Q: Is this evolutionary conservation of the pecten structure evidence that natural selection might be…

A: Birds belong to the class Aves under vertebrates in the animal kingdom. Birds have the biggest…

Q: Explain how the presence of Notonecta chemical cues affects gene expression in the Daphnia

A: Daphnia is the planktonic crustaceans of size range 0.2 to 5 millimeters. These species belong to…

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: Runt is a Drosophila gene involved in development. Mutation of runt leads to an embryonic lethal…

A: There are three important class of segmentation genes namely - gap genes, segment polarity genes and…

Q: Describe the mating and breeding processes of sea lions.

A: Sea lions are pinnipeds, meaning they have external ear flaps, long foreflippers, the ability to…

Q: The diagram shows various stages of embryonic development in 5 vertebrate species. Which of the…

A: According to the question, the diagram shows various stages of embryonic development in 5 vertebrate…

Q: genes and proteins involved in the formation anterior-posterior axes in mammals

A: This anterior-posterior axis runs from the head to the opposite end (tail) of the organism. This…

Q: Lactation and fur are synapomorphies that all mammals share. What else can we infer about lactation…

A: Synapomorphies are shared advanced characters.

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

A: In response to predators and pathogens of eggs, embryos may hatch early or delay hatching in…

Q: List down 3 differences and 3 similarities between the embryonic development of human & chicks

A: Introduction Embryogenesis is the process of initiating and developing an embryo from a zygote…

Q: What is the food needed by dogs? How do they obtain their food? How do they perform reproduction?…

A: Dogs are the organisms that belong to the kingdom animalia and to the class mammalia. Dogs are the…

Q: Assume that you discovered Caenorhabditis elegans that crawl significantly slower than others. How…

A:

Q: Explain how adjustments to gene expression affect the form andfunction of male and female mammals.

A: Whenever the sex chromosomes are considered, it is always stated that the female contains XX…

Q: Flying fish use large pectoral fins to glide in air. Explain how Lamarck and Darwin might account…

A: Natural selection  The selection of the beneficial trait for better survival.

Q: give one example of how development mirrors evolution

A: Evolution is the process by which complex organisms are formed from simpler ones . They occur…

Q: Human embryos have tails which become tail bones before birth. Tails also appear in fish, reptiles,…

A: close evolutionary connection between humans and many other mammals.

Q: The type of fertilization of an animal is different between animals that live on land and those that…

A: In the process of fertilisation, the haploid male gamete (spermatozoon or pollen), which carries…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.