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What is a carrier for a gene?
A carrier is someone who carries a recessive gene for a trait/disease, but does not express that trait (or have that disease)
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baam
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shark
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fairy
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banana
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25
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What's the difference between genotype and phenotype?
Genotype is what the person's DNA looks like, while phenotype is how the genes are expressed physically (example: blonde hair)
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20
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What's the difference between homozygous and heterozygous?
Homozygous alleles look the same, while heterozygous alleles are different
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Who is the "father" of genetics?
Gregor Mendel
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What is myelin?
Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord
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eraser
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gift
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gift
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baam
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Why are Sex-linked recessive disorders more common in males?
Men only have one X chromosome
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25
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What is a polygenic trait? Give an example of a human polygenic trait.
A polygenic trait is a characteristic, such as height or skin color, that is influenced by two or more genes
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What are the three different alleles exhibited in human blood type?
There are three different alleles, known as IA, IB, and i.
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What's the difference between a gene & an allele?
A gene is a portion of DNA that determines a certain trait. An allele is a specific form of a gene.
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Can a man be a carrier of a sex-linked gene?
Only females can be carriers; males cannot be heterozygous carriers.
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What pattern of inheritance does the disease (Lorenzo had) show?
X-linked (Sex-linked) inheritance
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baam
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star
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shark
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lifesaver
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20
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What is a sex-linked gene?
Sex-linked, as related to genetics, refers to characteristics (or traits) that are influenced by genes carried on the sex chromosomes
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monster
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shark
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