Punnett Squares (7th grade)
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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| cross | Represents the combining of male and female sex cells in Punnett squares. (When parents produce offspring.)
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| dominant | Describes a gene that is always expressed because it masks the other gene; represented by a capital letter.
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| genotype | The genetic code of an organism - represented by two letters.
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| heredity | The passing of traits from one generation to the next by means of genes.
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| phenotype | The physical appearance of an organism (based on its genotype).
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| Punnett square | A genetic tool to solve genetics problems mathematically.
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| recessive | Describes the gene that can be masked by a dominant gene; represented by a lower case letter. The recessive trait only appears when both genes are recessive.
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| trait | A distinguishing characteristic based on your genes (such as eye color or hair color).
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| hybrid | A genotype with 1 dominant and 1 recessive gene (like Tt or Bb)
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| purebred | A genotype with 2 dominant or 2 recessive genes (like BB or bb or HH or hh) also known as HOMOZYGOUS
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| probability | The chance or likelihood of something occurring.
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| Homozygous | Genotype with 2 dominant or 2 recessive genes for a trait: like TT or bb
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| heterozygous | genotype with one dominant and one recessive gene for a trait: like Tt, Bb or Rr.-also known as hybrid
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Mrs. Corey
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