Crawfish are shelled organisms that live in shallow freshwater rivers. They can have antennae of different lengths. Two parents with medium length antennae have offspring. One of their offspring has short antennae, and one has long antennae. How did the offspring end up with traits that are different from the traits of their parents? How did the gene combinations result in these traits?

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A: Darwin's finches are a classical example of adaptive radiation. Their common ancestor arrived on the…

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Q: What might have happened if finches didn't evolve into many different species?

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Q: might make the evolution of new traits more likely.

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A: Hi! Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Analogous structures perform similar functions but do not arise from common ancestry. What explains…

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Q: Genetic variation within a species is mostly like the result of??

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Q: Why isn't race a meaningful concept, in terms of biology?

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Q: According to the land bridge theory, why may people have crossed into North America from Siberia?

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A: Carriers of a trait are always heterozygous, and the trait is always recessive.

Q: Would the selection of characters differ with the choice of animals?

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Q: Where on the tree did Bilateral Symmetry Evolve? O A O B O D O E

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Q: Do a diagram that shows the evolution of a domesticated crop (corn or tomatoes

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Q: heterosis and the trait classification of animals

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

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Q: Dolphins and fish have similar body shapes. Is this homologous or analogous trait?

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Q: Do you think chickens and other birds can be descendants of other dinosaurs?

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Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.