Biological Diversity

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Biological Diversity
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World of Differences
Making Babies
Wearing Genes
Double helix
Selection Pressures
Hodge Podge
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What are variations?
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• The differences in a population.

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Why are variations important in a population?
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• Variations are important to ensure biological
  diversity. Without diversity survival of a
  population is questionable.

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What is speciation?
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• The evolution of different species from a single
  ancestor.

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What is the difference between a structural
adaptation and a behavioural adaptation?
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• Structural physical
• Behavioural observed behaviour

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What is an organisms niche?
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• The role and location of that organism.

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What are the four types of asexual reproduction?
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• Binary fission, spores, vegetative growth
  (meristems), and budding.

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State one similarity and one difference between
asexual and sexual reproduction.
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• Sim produce offspring traits passed on to
  offspring.
• Diff asex one parent, sex two more variation in
  sex. produced offspring.

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What is the advantage to internal fertilization
over external fertilization?
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• Protects gametes from predators and harsh
  environmental conditions.

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Which came first, the embryo or the zygote?
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• THE ZYGOTE!!!

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List the parts of the stamen.
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• Anther and Filament.

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Explain the difference between continuous and
discrete variation.
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• Continuous range
• Discrete limited possibilities

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What does the statement nature vs. nuture refer
to?
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• This is the ongoing debate over which factor
  plays a larger role in determining a persons
  characteristics.

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How is it possible for a brown eyed couple to
have a blue eyed baby?
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• Both parents carried and passed on a recessive
  gene for blue eyes.

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State three traits that are examples of discrete
variation.
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• Polydactyly, blood type, tongue rolling, attached
  earlobe, middigital hair, bent thumb

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Explain why blonde haired couple shouldnt be
able to have a brown haired baby.
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• Brown hair is dominant to blonde hair. Since both
  parent are blonde, they are carrying recessive
  forms of the gene. Any brown or dominant form
  would be expressed.

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Put the following genetic material in order from
smallest to largest Chromosomes, DNA, Genes
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• Genes are a section of DNA DNA strands make up
  chromosomes.

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What does DNA stand for?
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• Deoxyribonucleic Acid

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Complete the following nitrogen base pairs A -
____ G - ____
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• A - T
• G - C

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What is the process responsible for the
production of gametes?
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• Meiosis

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If an organism has 34 chromosomes in a skin cell,
how many chromosomes will be in a red blood cell?
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• 34

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Who first proposed the theory of natural
selection?
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• Charles Darwin

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Explain conditions that would favour high levels
of variation in a population.
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• When a population is faced with surviving a
  catastrophe, disease, climate change, food
  shortages, etc there are organisms in the
  population that are better equipped to survive.

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What are some advantages of biotechnology?
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• Faster results, more control over the outcome,
  insertion of human genes into other animals can
  produce human proteins.

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Why is there more bio diversity around the
equator?
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• More water, more heat and more sunlight more
  producers. The more producers you have, the more
  consumers there can be to eat them.

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How are bioindicator species used to determine
the health of an ecosystem?
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• If the population of the indicator species is
  thriving, then the ecosystem is healthy and able
  to suppor them. If their numbers are low, then
  their habitat is unable to support them.

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State the parts of the pistil.
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• Stigma, style, ovary and egg (ovum)

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Where in the body does meiosis take place?
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• In the sex organs (ovaries and testes)

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What are the roles of zoos and seed banks in
maintaining bio diversity?
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• Storage, breeding programs, conservation and
  education

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Explain how artificial and natural selection are
similar.
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• They both are capable of producing great
  diversity.

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State two of the four parts of the theory of
natural selection.
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1. More offspring are produced than can possibly
   survive.
2. Incredible variation within species.
3. Variations increase the chance of an organism
   surviving to reproduce.
4. Variations that are advantageous are passed on,
   which leads to changes in the characteristics of
   a species.

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Daily Double