Genotypes and phenotypes Flashcards

1
Q

what is a genotype

A

the double set of genetic instructions make up an organism’s genotype

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2
Q

what is a phenotype

A

the expression of physical, biochemical and physiological characteristics visible

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3
Q

what is complete dominance

A

genes are dominant and recessive, the dominant allele will mask/hide the recessive allele

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4
Q

what is codominance

A

when the heterozygote eexpresses the traits associated with both alleles, neither masks the other, both are expressed in the phenotype

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5
Q

what is incomplete dominance

A

when neither allele is dominant and combine to form a new phenotype - intermediate phenotype

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6
Q

how are the alleles of incomplete and codominance written

A

letters written in capital letters and different letters written in superscript

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7
Q

what are sex linked genes

A

genes carried on the y or x chromosomes

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8
Q

how are y or x genes written

A

y or x and lowercase or uppercase letters written above in superscript

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