Genetics
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Geneotype refers to an organisms.... | alleles or the letters of their genes
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| phenotype refers to an organisms... | looks or whether or not they express that trait
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| what is a punnet square? | a tool in genetics used to predict the outcome of crosses
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| how many sex chromosomes in a human are there? | 2
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| how many regular chromosomes in a human are there? | 44
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| what are chromosomes made of? | DNA and proteins
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| where are chromosomes found? | in the nucleus of a cell
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| who is the monk known as the "father of genetics"? | Gregor Mendel
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| what is genetics? | the study of heredity
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| what is heredity? | how traits are passed from parents to offspring
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| what are offspring? | children/babies
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| what is a pedigree? | a tool in genetics used to see how traits are inherited in families
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| what does homozygous mean? | both alleles are the same
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| what does heterzygous mean? | the alleles are different
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| what does homozygous dominant mean? | both alleles are dominant
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| what does homozygous recessive mean? | both alleles are recessive
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| what does a carrier mean? | one allele is dominant and one is recessive
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| if a disorder is recessive will a carrier have that disorder? | no
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| if a disorder is recessive will someone that is homozygous recessive have that disorder? | yes
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| what is an allele? | a version of a trait
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| how many alleles for a trait do you receive from your mom? | one
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| what does sex-linked mean? | it means the trait or disorder is linked to a sex chromosome
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| what sex chromosomes do men have? | XY
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| what sex chromosomes do women have? | XX
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| Which sex chromosome carriers so few genes that we do not put letters after it in punnet square problems? | Y
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| in a pedigree circles represent? | females
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| in a pedigree squares represent? | males
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| in a pedigree when a circle and square are linked by a horizontal line this shows | marriage
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| in a pedigree if there are two rows of circles and squares how many generations are there? | two.
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Created by:
ruth.baker
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