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Inheritance Patterns - Coggle Diagram
Inheritance Patterns
Sex linkage
When genes are located on the sex chromosomes and code for characteristics other than the gender of individuals.
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Sex-linked traits are characteristics where alleles are responsible for them only located on the X chromosome
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Females can have a dominant and recessive gene as they have two X chromosomes therefore can be a carrier of a recessive gene.
Co-dominance
Both alleles for a trait are expressed at the same time without blending of the trait that each allele specifies
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Denontations
Different letters for different genes, e.g. R and W --> Both dominant
Multiple Alleles
Some traits may have multiple alleles that code for traits which by Mendel are typically expressed based on the two alleles
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Don't confuse a phenotypic trait that has multiple alleles with phenotypic traits that are coded for by multiple genes.
Incomplete Dominance
Similar to co-dominance in that both alleles for a given gene are expressed meaning that neither of the two alleles have complete dominance over the other
Results in the blending of the two parent's phenotypes which is visible in the offspring's phenotype
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Denotations
Upper case for dominant, lower case for recessive
Autosomal
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The punnet square considers both maternal (female) and
paternal (male) alleles and how they could be inherited by the gamete both phenotypically and genotypically
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