What is the likely mechanism of speciation for pupfishes? for cichlids?

Q: Does Distance Between Salamander Populations IncreaseTheir Reproductive Isolation?

A: Organisms of a species interact with other organisms in various ways. One such way is reproduction,…

Q: What is the second greatest known cause of amphibian declines, after habitat loss?

A: One of the major cause is the habitat loss. Along with this the causing of disease as well as…

Q: How does increasing the sea level affect each species of barnacle?     How are the barnacles…

A: A barnacle belonged to the subphylum Crustacea and is related to crabs and lobsters. Barnacles are…

Q: What is the giant freshwater stingray

A: INTRODUCTION giant freshwater stingray is the largest fish swimming in freshwater on earth.

Q: Why are Tuataras not grouped together with the lizards? What morphological character separates them?

A: Though Tuataras look similar to lizards but they are actually very different both morphologically…

Q: What advantages does seasonal migration provide for birds?

A: Seasonal migration can be defined as the movement of birds from one habitat to another in response…

Q: domestic pig under the genus "Sus"

A: The organisms of the ecosystem have significant properties. Depending upon the different features of…

Q: What type of distribution pattern is evident for the copepod species Clausocalanus ingens in the…

A: Distribution is the pattern of arrangement of a population in an area. The limit of the geographical…

Q: Are “fish” a monophyletic group?

A: The taxon is the term used in the field of life science for categorizing animals, autotrophs, and…

Q: Explain the difference between mictic and amictic eggs of rotifers. What is the adaptive value of…

A: The members of the phylum Rotifera have can range in the length from 40 micrometers to 3…

Q: How is habitat disturbance absolutely necessary for the long-termsurvival of the woodpecker?

A: Habitat disturbance is defined as the disruption of the pattern of the ecosystem by external…

Q: What evidence suggests that four-legged animals came from fish?

A: Evolution is a slow process which explains that how the species changes with time to survive in…

Q: Does sexual selection in cichlids resultin reproductive isolation?

A: Reproduction is the process by which an organism creates more of its own progeny. Reproduction is…

Q: Give the differences between lancelet and lamprey with regard to the external characters?

A: Lancelets belong to a class of Cephalochordata, primitive chordates. They are small animals usually…

Q: What are lobe-finned fishes ?

A: Fish are oceanic, craniate, gill-bearing creatures that don't have appendages with digits.  The…

Q: How many eggs does each female oyster produce each year?

A: Oyster is the common name for a number of salt-water bivalve mollusk families that live in marine or…

Q: List the features that distinguish birds from the rest of thereptile lineage.

A: Birds are predicted to have descended from carnivorous dinosaurs, as these organism starts growing…

Q: How might the ability to crawl on land for short periods haveenhanced the reproductive fitness of…

A: Tiktaalik is an extinct fish and lived approximately 375 million years ago. Even though Tiktaalik is…

Q: Name three adaptations that allow reproduction to takeplace on land.

A: Adaptation is a dynamic process by which species evolve specialized features that allow them to…

Q: What are the HOT areas of research in the field of Zoology in Pakistan?

A: As the question is wrong, I am giving the first part explanation.

Q: What are the main featuresof fishes associated to thehabitat where they live?

A: Fishes are gill-bearing, craniate, aquatic vertebrate animals which lacks limbs and proper digits.…

Q: hat is the reproductive strategy for frogs?

A: In some animals, the young ones are different from their adults. For example, A tadpole is…

Q: How density influence migration of fish?

A: When in a population or community, the organisms move from one area to the other to ensure…

Q: What is the biggest turtle in North America?

A: Turtles are reptiles of the order Testudines characterized by a special bony or cartilaginous shell…

Q: why do so animals have a sharply defined reproductive season during the year?

A: Animal species that successfully mates only during the certain times of the year are known as…

Q: The scientific name for the African rock python is Python sebae. Which name indicates its genus?

A: A name given to a creature by researchers, notably the scientific name, which includes the genus and…

Q: Is there a respiratory pigment in the annelid blood?

A: The annelids are also referred to as the segmented worms. Some examples are leeches and earthworms.…

Q: Why is dolphin aammals?

A: Mammals belong to the class vertebrata and includes a diverse group of animals. Parental care is…

Q: Give three characteristics of lizard's death?

A: Lizards belong to the Class Reptilia and includes about 6000 species, which are cosmopolitan in…

Q: What are poineer species?What is the role of the poineer species?

A: Species refers to group of organisms that can interbreed among themselves to give rise to fertile…

Q: How does schooling behavior benefit fishes?

A: Schooling refers to a specific type of behavior that is observed when many fish swim together and…

Q: a) Which two species are the most closely related? b) Are pike more closely related to lungfish or…

A: Phylogeny is a branch of biology that studies the evolution of a group of organisms in comparison…

Q: What class do sea turtles belong? How do you know?

A: Vertebrates originated in the ocean. Land vertebrates descended from Bony fishesEvolved two pairs of…

Q: How do molecular and morphological data evidence clash in the classic example of cichlid fishes in…

A: Cichlids are fishes that are found in African lakes. Their body size varies from 1 inch to 3 ft.…

Q: What symbiotic relationship do sharks and coral reef have?

A: The depends of two different species on each other is known as symbiosis. This kind of relationship…

Q: What time of the year do clownfish mate

A: Clownfishes are tiny, brightly coloured fishes. They thrive in shallow lagoons or sheltered reefs…

Q: What is the primary physical feature in which the species of finches differ?

A: There are 15 species of finches which differ in beak shape , size and feeding behaviour.

Q: List the similarities between lancelet and the lamprey?

A: Phylum Chordate which is characterized by the presence of notochord and dorsal nerve cord consists…

Q: this is a mussel identify the mantle, the adductor, dorsal, ventral side, the anterior and…

A: Thank you for the question  Answer

Q: Holometabolis refers to complete metamorphosis (True/False)?

A: The above-mentioned statement is true. Holometabolsim is a synonym for complete metabolism. It…

Q: Why do clown fish and sea anemone pair up? What is this relationship called?

A: In nature, population of different species interact with each other in different ways such as…

Q: How temperature influence distribution of fish?

A: Fish can be defined as the type of living organism which lives in the water. They are present in…

Q: How has frugivory shaped the evolution of oil birds?

A: Evolution is the process by which organisms inherit modified characters over a period of…

Q: Lancelet (outgroup) Lamprey Tuna Salamander Turtle Leopard Hair Amniotic egg Fo lancelet Jaw turtle…

A: Cladogram is used to represents the ancestor-descendant relationships It helps us to mainly…

Q: How is a penguin's body shape and morphology adapted for an aquatic habitat?

A: Penguins are a group of aquatic flightless birds. They live almost exclusively in the Southern…

Q: Name any two fresh water fishes?

A: Fish are gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group…

Q: is the group of chordates considered monophyletic? yes or no? why?

A: A monophyletic group, sometimes also called as clade, includes an ancestral taxon and all of its…

Q: What has happened to the green anole lizard in terms of population?

A: Anolis carolinensis or green anole is a tree-staying species of anole reptile local toward the…

Evolutionary lineages

An evolutionary lineage is a series of populations of organisms that descend from a common ancestor. Each species in the lineage is the direct consequence of evolutionary change from a common ancestor. A phylogenetic tree is generally used to display lineages visually. Lineages are components of the phylogenetic tree of life. Molecular systematics procedures are widely used to predict lineages.