0
What else can I help you with?
How do analogous structures and homologous structures differ?
Homologous features of animals are a lot more recent in contrast to evolution, where as analogous dates far back. Homologous features are similar in structure, but perform different functions, such as the human hands and dolphin flippers, which makes room to allow recent evolution comparisons while analogous consists of wings of a bee and a bird, which are completely different. When trying to determine evolutionary relationship between two species, biologists concentrate on homologous features, as analogous features would be considered useless in this case.
What are 3 types of evidence for evolution?
The basic textbook answer is: embryology, homologous and analogous structures, and fossils. However these are old ideas and don't stand on their own two feet, so to speak, when more research is done into them.
How does homologous structure support the theory of evolution?
Evolution is the process of deriving species from other species, forms from other forms. Homologous structures are structures in organisms that share the same components. A good example is the vertebrate limb - it's clear that our arm, a bat's wing, a dolphin's flipper and a mole's digging paw all share the same identifiable bones. This supports the idea they're all derived from a structure in a common ancestor, as opposed to being created independently.
What is the name given to a pair of chromosomes that have matching locations for alternate forms of the same gene?
homologous chromosomes
What are the Five different lines of evidence for evolution?
Fossil record showing transitional forms. Homologous structures in different species. Similarities in embryonic development. Genetic similarities among different species. Biogeographical distribution patterns.
What is the difference between a homologous structure and a analogous structure?
Homologous structures are different forms of animal anatomy which have come from the some origin (a common ancestor), these can be extremely different in appearance and function. For example a bats wing, a seals flipper and a human arm all have common bone and muscle structures suggesting that they all derived from a common ancestor. Vestigial structures are parts of the anatomy which have lost their original function through the evolutionary process and no longer obtain a major functional role in that animals life. For example in human the appendix's original function was to break down cellulose in plant material, other vestigial functions in humans include the coccyx (tailbone) and ear muscles.
When your eye forms an image the plays a role analogous to the detector in a camera?
the retina
What are the four pieces of evidence that support the theory of evolution?
The four pieces of evidence that support the theory of evolution are the fossil record showing transitional forms, homologous structures in different species indicating a common ancestor, genetic similarities between different species, and observable examples of natural selection in action.
What gas became part of Earths atmosphere mainly as a result of the evolution of life-forms?
Oxygen became part of Earth's atmosphere mainly as a result of the evolution of life forms, particularly through photosynthesis by early cyanobacteria and plants. This process involved converting carbon dioxide into oxygen as a byproduct, leading to the oxygen-rich atmosphere we have today.
What are 3 forms of evidence for evolution?
Fossil record: Shows a gradual change in species over time, supporting the idea of common ancestry and evolution. Genetic evidence: Similarities in DNA sequences between different species indicate shared ancestry and evolutionary relationships. Comparative anatomy: Homologous structures among different species suggest a common origin and evolution from a common ancestor.
What is the composition of a bivalent at the beginning of prophase 1?
A bivalent at the beginning of prophase I is composed of two homologous chromosomes that have already replicated into sister chromatids. Each homologous chromosome consists of two sister chromatids joined by a centromere. The bivalent forms as the homologous chromosomes pair up and undergo synapsis.
How do you write the definition of homologous chromosome using the terms gene and allele?
Homologous chromosomes are pairs of chromosomes in a diploid organism that share the same genes at the same loci. Each gene may have different forms, called alleles, on the homologous chromosomes.
