Study

B6: Inheritance, Variation and Evolution

  •   0%
  •  0     0     0

      Back   Restart
  • Base pairs
    DNA code letters.
  • Carrier
    Faulty allele, no illness.
  • XX are ......... chromosomes
    Female
  • Adaptation
    Trait helping survival.
  • Fossil record
    Collection of fossils left in the earth
  • Isolation
    When groups are kept apart
  • Inherited disorder
    Illness from genes.
  • Disease resistance
    Ability to avoid getting sick.
  • Evolutionary change
    When new traits occur over time
  • Inheritance
    Passing on genes.
  • Allele
    Version of a gene.
  • Generations
    Many rounds of offspring.
  • Variation
    Differences in species.
  • Environmental variation
    Differences from surroundings.
  • Protein
    Molecule doing jobs.
  • Mitosis
    Cell division making identical cells.
  • Transgenic organism
    DNA from another species.
  • Heterozygous
    Two different alleles.
  • Genetic code
    Instructions in DNA.
  • Natural selection
    Best survive, reproduce.
  • Antibiotic resistance
    When bacteria survive antibiotics
  • Vector
    Tool moving DNA.
  • Variation
    Differences in individuals.
  • Inherited characteristics
    Traits from parents.
  • Plasmid
    Small DNA circle in bacteria.
  • Darwin
    Suggested natural selection.
  • Evolutionary tree
    A tree which shows how species are related
  • Inbreeding
    Close relatives breeding.
  • Natural selection
    Best survive, reproduce.
  • Gametes
    Sex cells like sperm or egg.
  • Cloning
    Making identical copies.
  • Extinction
    When a species dies out
  • Chromosome
    Structure of DNA.
  • Genome
    All DNA of organism.
  • Genes
    DNA sections controlling traits.
  • Mutation
    DNA changes traits
  • Genetic characteristics
    Traits passed from parents (like size or color).
  • Sexual reproduction
    Two parents mix genes.
  • Reduction division
    Meiosis halves chromosomes.
  • Competition
    Struggle for resources.
  • Offspring
    The babies of plants or animals.
  • Punnett square
    Grid predicting offspring.
  • Natural selection
    Best adapted survive.
  • Adaptation
    Trait helping survival.
  • Survival advantage
    Helpful trait
  • Dominant disorder
    One faulty allele causes it.
  • Clones
    Identical copies.
  • Wallace
    Worked on natural selection.
  • Continuous variation
    Range of values.
  • Survival advantage
    Trait that helps survival.
  • Embryo screening
    Test embryos for disorders.
  • Acquired characteristics
    Traits from life.
  • Inbreeding
    Breeding closely related animals or plants.
  • Selective breeding
    Humans pick parents.
  • Speciation
    One species splits
  • Resistance
    Avoid disease/pests.
  • Genotype
    Genes you have.
  • Cystic fibrosis
    Thick sticky mucus illness.
  • Egg cell
    Always X chromosome.
  • Variation
    Differences in individuals.
  • Selective breeding
    Humans choose breeding.
  • Chromosomes
    DNA threads with genes.
  • Reduced variation
    Less differences.
  • Genetic variation
    Differences in offspring.
  • Sperm cell
    X or Y chromosome.
  • Insulin
    Hormone made by bacteria.
  • Genetic variation
    Differences from genes.
  • Reproductive isolation
    Wehn one group doesn't breed with another group
  • Common ancestor
    Shared older species
  • Carrier
    Has faulty allele, no symptoms.
  • Dominant allele
    Shows if present.
  • Selective breeding (artificial selection)
    Humans choosing which plants or animals to breed.
  • Desired characteristic
    A feature people want (like more milk or bigger flowers).
  • Domesticated animals
    Animals raised by humans to help or live with them.
  • Fossils
    Remains of living things left in rock
  • Changing environment
    Conditions change.
  • Rapid reproduction
    Asexual is quick.
  • Speciation
    New species form.
  • Genetic testing
    Check DNA for faults.
  • Zygote
    First cell after fertilisation.
  • Evolution
    Species change over time.
  • Inheritance
    Pass on traits
  • Cell division
    One cell splits.
  • Generations
    Parents, children, and grandchildren over time.
  • Competition
    Struggle to survive.
  • Phenotype
    Traits you show.
  • Speciation
    When a new species is formed
  • Polydactyly
    Extra fingers or toes.
  • Variation
    Differences from gametes.
  • Recessive disorder
    Two faulty alleles cause it.
  • Discontinuous variation
    Set options only.
  • Meiosis
    Cell division making gametes.
  • Yield
    Amount of product.
  • Homozygous
    Two same alleles.
  • Gene
    DNA piece coding protein.
  • XY are ....... chromosomes
    Male
  • Asexual reproduction
    One parent, identical offspring.
  • Survival of fittest
    Best traits help survival.
  • Genetic engineering
    Change DNA of organism.
  • Mutation
    DNA change makes new traits.
  • DNA
    Molecule with instructions.
  • Stable environment
    Conditions don’t change.
  • Desirable traits
    Wanted features.
  • Fertilisation
    Joining sperm and egg.
  • Mutation
    DNA change.
  • Inherited defects
    Health problems passed from parents.
  • Sequencing
    Finding DNA order.
  • Recessive allele
    Shows if two copies.
  • Probability
    Chance of boy/girl.
  • Ethics
    Right or wrong issues.
  • Barrier
    Something stopping species meeting each other
  • Desired traits
    Wanted features.
  • Genetic info
    Instructions in DNA.
  • GM crops
    Crops with changed genes.
    • Your experience on this site will be improved by allowing cookies.