Genes Flashcards

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1
Q

Genes

A

Made up of sequences of DNA at specific locations on chromosomes

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2
Q

Amino Acids

A

Form proteins

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3
Q

Gene to Protein

A

sequence of bases in a gene determines which amino acids are used to build the protein - sequence of amino acids determines the shape of the protein - the shape of protein determines the function of the protein - the function of the protein affects the traits of the organism.

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4
Q

Alleles

A

Different versions of genes, have same position on a chromosome as each other, but have slightly different base sequences.

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5
Q

Genotypes

A

Pair of alleles that an individual has, written in pairs of letters

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6
Q

Phenotype

A

Physical characteristics, are determined by alleles in genotype.
Written as descriptions of what the trait looks like.

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7
Q

Dominant

A

A dominant trait or gene

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8
Q

Recessive

A

A trait that is expressed only when the genotype is homozygous

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9
Q

Homozygous

A

Two copies of the same allele (both dominant or recessive)
- Homozygous dominant –> dominant phenotype (BB)
- Homozygous recessive –> recessive phenotype (bb)

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10
Q

Heterozygous

A

Has one dominant allele and one recessive allele.
(Bb)

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11
Q

Amino acids

A

building blocks of proteins

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12
Q

Types of genotypes

A

Tt - Heterozygous genotype
bb- Homozygous recessive genotype
TT - homozygous dominant genotype

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