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Variation and Evolution

James Copley 5 questions

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Questions in this quiz (5)

  1. 1What are examples of continuous variation?
    1. AHeight
    2. BBlood Group
    3. CWeight
    4. DGender
    5. ESkin Tone
    6. FEye Colour
    7. GHair Colour
  2. 2Continuous Variation is [blank_start]quantitative[blank_end] - it can be measured. It is variation that is not split into a few little [blank_start]subcategories[blank_end] but can seem to be continuous. Discontinuous variation is largely due to [blank_start]genes[blank_end], more than continuous variation is.
    The risk of [blank_start]mutation[blank_end] is greatly increased by exposure to [blank_start]mutagenic[blank_end] agents. They cause a [blank_start]base[blank_end] to be removed and replaced by another [blank_start]base[blank_end], altering the genetic [blank_start]code[blank_end] of the organism.
    Mutagenic agents can come in a variety of forms: [blank_start]Nuclear[blank_end] or Ionising radiation, X-Rays and [blank_start]Ultra-Violet[blank_end] light, Certain chemicals called [blank_start]mutagens[blank_end], some of which can cause cancer and so are called [blank_start]carcinogens[blank_end]. A common source of mutagens and carcinogens is [blank_start]cigarette[blank_end] smoke.
    1. Aquantitative
    2. Bsubcategories
    3. Cgenes
    4. Dmutation
    5. Emutagenic
    6. Fbase
    7. Gbase
    8. Hcode
    9. INuclear
    10. JUltra-Violet
    11. Kmutagens
    12. Lcarcinogens
    13. Mcigarette
  3. 3Religious theories are based on the need for a 'creator' for all life to exist on Earth, but there are other much more substantiated theories. Charles Darwin put forward his theory of evolution about [blank_start]140[blank_end] years ago. When Darwin visited the [blank_start]Galapagos[blank_end] Islands, he made a number of observations that led to the development of his theory. These were: Organisms produce more [blank_start]offspring[blank_end] than can possibly survive, Population numbers remain fairly [blank_start]constant[blank_end] despite this, All organisms in a [blank_start]species[blank_end] show variation, and some of these [blank_start]variations[blank_end] are inherited.
    He also concluded from these observations that since there were more offspring produced than could [blank_start]survive[blank_end], there must be a struggle for [blank_start]existence[blank_end]. This is called the survival of the [blank_start]fittest[blank_end] or natural [blank_start]selection[blank_end].
    1. A140
    2. BGalapagos
    3. Coffspring
    4. Dconstant
    5. Especies
    6. Fvariations
    7. Gsurvive
    8. Hexistence
    9. Ifittest
    10. Jselection
  4. 4Mutations that occur in [blank_start]genes[blank_end] are usually [blank_start]harmful[blank_end], but in the some cases it can be useful when the environment [blank_start]changes[blank_end]. Over a long period of time, gradual changes ([blank_start]mutations[blank_end]) may result in totally new [blank_start]species[blank_end] being formed. This brings us back to the theory of evolution, that all species evolved from a common [blank_start]ancestor[blank_end] that existed billions of years ago, and that those species that were unable to adapt to their [blank_start]surroundings[blank_end] became extinct.
    1. Agenes
    2. Bharmful
    3. Cchanges
    4. Dmutations
    5. Especies
    6. Fancestor
    7. Gsurroundings
  5. 5Fossils are the remains of dead [blank_start]organisms[blank_end] that lived [blank_start]millions[blank_end] of years ago and are found in rocks. Most dead organisms [blank_start]decay[blank_end] and disintegrate, but the following are ways that fossils can be formed: The hard parts of animals that don't [blank_start]decay[blank_end] form into a rock, Minerals which preserve their [blank_start]shape[blank_end] gradually replace the softer parts of animals that decay very [blank_start]slowly[blank_end]. Fossils are formed in areas where one or more of the [blank_start]conditions[blank_end] needed for decay are absent; for example, areas where there is no [blank_start]oxygen[blank_end], moisture or [blank_start]warmth[blank_end].
    1. Aorganisms
    2. Bmillions
    3. Cdecay
    4. Ddecay
    5. Eshape
    6. Fslowly
    7. Gconditions
    8. Hoxygen
    9. Iwarmth

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Description
Biology Quiz on Variation and Evolution, created by James Copley on 19/02/2017.
Language
English
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