Recessive alleles are represented by what type of letter?
Lowercase or "little"
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5
Dominant alleles are represented by what type of letter?
Capital or "big" letter
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5
An organism with 2 identical alleles for a trait is considered
homozygous (purebred)
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5
Give an example of homozygous dominant genotype using the letter "D"
DD
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banana
Go to last place!
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gift
Win 20 points!
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rocket
Go to first place!
Okay!
lifesaver
Give 10 points!
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15
12) A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR). What percentage of the offspring will be homozygous round?
2/4, 50%
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15
10) A TT (tall) plant is crossed with a tt (short plant). What percentage of the offspring will be tall?
4/4 - all - 100%
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15
When you need to determine if an organism is homozygous or heterozygous. what need to cross if with a recessive organism and look at the offspring. Why?
If there are any offspring showing the recessive trait, the dominant individual must be carrying the recessive allele - heterozygous
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seesaw
Swap points!
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star
Double points!
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gift
Win 25 points!
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thief
Give points!
5
10
15
20
25
seesaw
Swap points!
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magnet
Take 25 points!
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fairy
Take points!
5
10
15
20
25
banana
Go to last place!
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5
Alleles are represented by....
letters
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5
On a Punnett Square, each box represents what percentage?
25%
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10
On a Punnett Square, the parents are located on....
the top and side
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10
If an organism is heterozygous, does it show the dominant or recessive trait?
Dominant
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10
The different forms of a gene are called...
alleles
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10
If an organism shows the recessive trait, is it heterozygous or homozygous?
