The nucleus of gamete cells contain the genetic material which is passed from parents to offspring.
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What is the main difference between Lamarks theory evolution and Darwin's theory?
Lamark suggested that characteristics which developed durning the lifetime of the organism could be passed on. Darwin said that organisms with the best characteristics survived to breed and the offspring inherited the characteristic.
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Lamark suggested that characteristics which developed durning the lifetime of the organism could be passed on. Darwin said that organisms with the best characteristics survived to breed and the offspring inherited the characteristic.
Scientists did not have enough evidence and they didn't know about genes. It challenged the idea of god
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Why is it that only some members of a population survive to breed?
Organisms compete for things such as light or food. If an organism is well adapted to its environment it will survive. Poorly adapted ones die before they breed.
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Why is there variation between members of the same species?
If the offspring are produced by sexual reproduction, then the genes of both parents are inherited in different combinations when the gametes fuse
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What is meant by the term "survival of the fittest"?
Those that are best adapted or suited to their environment live long enough to breed, the weaker ones may die.
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What is meant by "natural selection"
Organisms which are best adapted to the environment survive, breed and pass on their genes to the next generation.
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What is meant by the term "species"?
Species are organisms which look very similar to each other and can interbreed produce fertile offspring.
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Suggest three factors that could change in a habitat area, causing problems for the organisms living there?
Climate may change, become hotter/colder, a new disease may affect the population.
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Why do biologists draw evolutionary trees?
Evolutionary trees show the relationships between organisms and whether they had common ancestors.
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Other cards in this set
Card 2
Front
What is the main difference between Lamarks theory evolution and Darwin's theory?
Back
Lamark suggested that characteristics which developed durning the lifetime of the organism could be passed on. Darwin said that organisms with the best characteristics survived to breed and the offspring inherited the characteristic.
Card 3
Front
Lamark suggested that characteristics which developed durning the lifetime of the organism could be passed on. Darwin said that organisms with the best characteristics survived to breed and the offspring inherited the characteristic.
Back
Card 4
Front
Why is it that only some members of a population survive to breed?
Back
Card 5
Front
Why is there variation between members of the same species?
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