U2 KA 4 Monohybrid Inheritance
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Inherited characteristic | something that is passed from parents to offspring
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| Sexual reproduction | offspring have genes from 2 parents, increases variation
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| Asexual reproduction | offspring are clones of one parent
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| Variation | the differences present in a species
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| Discrete variation | differences that can be observed and fall into distinct categories
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| Continuous variation | differences that are measured and fall over a range of values between a minimum and maximum
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| Polygenic | something that is determined by many genes (generally causes continuous variation)
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| Family tree | Genetic relationships between individuals in a family
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| Phenotype | the physical appearance of a characteristic
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| Genotype | the alleles that are present
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| F1 generation | the first filial generation, offspring of parents
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| F2 generation | the second filial generation, second generation down from parental
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| P1 generation | parental generation
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| Predicted ratio | the expected numbers of each type of offspring as worked out in the punnet square
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| Punnet square | a method of working out what genotypes (and phenotypes) to expect from a cross
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| Homozygous | genotype containing 2 of the same allele
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| Allele | forms of a gene
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| Homozygous recessive | genotype containing two copies of the recessive gene (aa)
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| Homozygous dominant | genotype containing two copies of the dominant gene (AA)
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| Heterozygous | genotype containing different alleles (Aa)
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| Dominant | allele that only requires one copy to show in phenotype, shown as a capital letter
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| Recessive | allele that requires two copies to show in phenotype, shown as a lower case letter
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| Diploid | cell that contains 2 sets of chromosomes
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| Haploid | cell that contains 1 set of chromosomes
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Created by:
nscobie
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