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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| what is a nucleus? | where the genetic information/genes/DNA are located on chromosones.
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| Where do chromosomes exist? | In every cell
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| How do chromosomes exist? | Chromosomes exist in pairs
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| How many pairs of chromosomes does the human body have? | 23 pairs; 46 individual chromosones
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| What are chromosomes made up of? | Chromosomes are made up of chromatin
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| What is chromatin made up of? | DNA and protein
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| What is a locus? | A spot on a chromosome where a gene is located.
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| Each chromosome has its own what? | Gene.
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| How would you say...A = A | Big a over big a
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| What is a centromere? | coiled up chromatin; it has a purpose.
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| If you stretch out a chromosome, what do you get? | DNA.
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| What is a genotype? | What the genes on the chromosome are.
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| What is a phenotype? | What the genes produce physically
*physical representation of the genotype.
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| Can genetypes have different forms? | Yes.
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| What are the forms of genetypes called? | Alleles.
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| T=tall t=short | T dominates over little t unless t
=
t
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| Dominance | The presence of this allele makes all others; it's the ruler
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| Recessive | The matched one
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| If one allele is dominant, what is the other one? | Recessive.
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| Where does the dominant go; where does the recessive go? ? = ? | Dominant on the top; recessive on the bottom.
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| Homozygous geneotypes have what? | The same alleles.
T t
= =
T t
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| Heterozygous geneotypes have what? | Opposite alleles.
T
=
t
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Created by:
abbeygri
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