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1st Quarter - G8
Science
Patterns of Inheritance
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Different versions of a gene found at the same location (locus) on homozygous chromosomes.
Allele
Thread-like structure made of DNA.
Chromosome
Fundamental units of heredity.
Genes
Genetic trait that is expressed when present, overriding the expression of its recessive allele.
Dominant
Genetic trait expressed only in the absence of the dominant allele.
Recessive
A -
Dominant
a -
Recessive
AA -
Homozygous Dominant
Aa -
Heterozygous Dominant
aa -
Homozygous Recessive
AA
- Homozygous Dominant
Aa
- Heterozygous Dominant
aa
- Homozygous Recessive
Genetic make-up of an organism
Genotype
Observable traits or characteristics of an organism.
Phenotype
Diagrammatic representation of a family's genetic history, showing the transmission of traits across generations.
Pedigree
Having two identical alleles for a particular gene (e.g., homozygous dominant or homozygous recessive).
Homozygous
Having two different alleles for a particular gene (e.g., one dominant and one recessive allele).
Heterozygous
Tiny instructions passed from parents to children that shape certain traits or features in the children.
Genes
Branch of Science that studies genetics, field of biology that focuses on heredity.
Genetics
Whos is the father of Genetics?
Gregor Mendel
A specific characteristics of an organism that can be inherited.
Traits
The principles of inheritance discovered by Gregor Mendel, including the law of dominance, law of segregation and the law of independent assortment.
Mendelian Inheritance
A diagram used to predict the possible genotype combinations of offspring from a genetic cross between two parents.
Punnett Square
A genetic cross involving only one trait.
Monohybrid Cross
A genetic cross involving two different traits.
Dihybrid Cross
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