Flashcards
Variation
Flashcards do conjunto (23)
- 1What are the 5 kingdoms?Animalia, Plantae, Fungi, Protoctista, Prokaryotes
- 2The 5 classes of Vertebrates?Fish, Mammals,
Reptiles, Birds and
Amphibians - 3Order of the hierarchical for classification?Kingdom, Phylum, Class, Order, Family, Genus, Species
- 4Two causes of variation?Genes, Environment
- 5Continuous variation is?vary within range, no distinct categories
- 6Discontinuous variation is?There are distinct categories
e.g blood group (A, B, AB, O) - 7-Adaption to high temps Chemosynthesis is?Bacteria that has adapted to live on Hydrothermal vents, making their own food using chemical energy.
- 8-Adaption to cold temps Name an animals that has adapted to live in polar regions?Polar bears - thick hair, compact body shape, big feet (spreading weight).
- 9Define Natural Selection?when organisms better adapted to their environment and produce offspring.
- 10Define Specification?Specification the the development of a new species
- 11Define Specification though isolation?A Population of a species is separated, this could be due to a physical barrier
- 12Define Specification though Conditions?On either side of the physical barrier that has split the population the climate it different, causing the specie to have different characteristics
- 13How many pairs of chromosomes does a human cell contain?23 pairs
- 14what is an allele?Different versions of the same gene
- 15Define Homozygous?An organism with two of the same alleles.
e.g HH, not Hh - 16Define Heterozygous?An organism with two different alleles.
e.g Hh, not HH - 17Define a recessive characteristic?an organism with two recessive alleles e.g hh
- 18Define a dominant characteristic?The dominant allele overrules the recessive one, e.g Hh or Hh
- 19Define Genotype?What alleles you have
- 20Define Phenotype?the acctual characteristic
- 21Cystic fibrosis and sickle cell anaemia are caused by?A recessive allele
- 22Symptoms of Cystic Fibrosis?Breathing difficulties,
lung infection, malnutrition, fertility problems - 23Symptoms of Sickle cell Anaemia?Tiredness, painful joints, fever, anaemia