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27 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Offspring that result from crosses between true-breeding parents with different traits are called __________. |
Hybrids |
klaus from vampire diaries |
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Two heterozygous parents for height have kids. What is the phenotypic ratio? |
3:1 |
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When Mendel crossed true-breeding tall plants with true-breeding shorts plants, all the offspring were tall because of what? |
The allele for tall plants is dominant |
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A homozygous and heterozygous plant for height are crossed. What are the possibly phenotypes? |
Tall |
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The principles of probability can be used to __________. |
Predict the traits of the offspring produced by genetic crosses |
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A Punnett square shows all of the following EXCEPT ............ |
The actual results of a genetic cross |
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How many different allele combinations would be found in the gametes produced by a pea plant whose genotype was RrYY? |
2 |
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A cross of a white hen with a black rooster produces offspring with some black feathers and some white feathers. This type of inheritance is known as _______________. |
Codominance |
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If an organism's diploid number is 12, its haploid number is what? |
6 |
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What is shown in Figure 11-1? |
Crossing-over |
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When do chromosomes form tetrads? |
Prophase of meiosis 1. |
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Define probability. |
The likelihood that a particular event will occur. |
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Fun fact: Gene maps are based on the frequencies of crossing-over between genes! ππ |
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In the Punnett square shown in Figure 11-6, the genotypes of the offspring are __________. |
TT, Tt |
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How many recessive alleles for a trait must an organism inherit in order to show that trait? |
2 |
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What are the genotypes of the offspring in box 1,2,3,4,5 in Figure 11-3? |
1. RRYY 2. RRYy 3. RrYY 4. RrYy 5. rrYy
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What are the differences between cells produced by mitosis with those produce by meiosis? |
1. Mitosis produces 2 genetically identical diploid cells.
2. Meiosis produces 4 genetically different haploid cells. |
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3 reasons Thomas Hunt Morgan used fruit flies? |
1. They are inexpensive. π² 2. They are easy to work with. β 3. They produced faster results instead of having to wait months. ππππ |
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The principle of dominance states that.............. |
Some alleles are dominant and others are recessive |
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Two plants with the genotypes TT and Tt would have the _________ phenotype. |
Same |
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Organisms that have two identical alleles for a particular trait are said to be _______________. |
Homozygous |
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Situations in which one allele for a gene is not completely dominant over another allele for that gene are called .......... |
Incomplete dominance |
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Who does Mendel's principles of genetics apply to? |
All organisms π |
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The number of chromosomes in a gamete (sex cell) is represented by the symbol ______. |
N |
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Gametes are produced by the process of ______________. |
Meiosis |
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Traits that are produced by the interaction of several genes are said to be ______________. |
Polygenic |
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Define alleles. |
Alleles are the different forms of a gene. |
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