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Review: 2 heterozygous dominant plants are crossed
Review: 2 heterozygous dominant plants are crossed. Complete the punnett square: Green is dominant, white is recessive
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2 heterozygous dominant plants are crossed.
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2 heterozygous dominant plants are crossed
2 heterozygous dominant plants are crossed. Complete the % and genotype & phenotypes. Green is dominant, white is recessive 1. What percent would be homozygous green? 2. What percent would be heterozygous green? 3. What percent would be white? G g GG Gg G g Gg gg
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Add to table of contents:
MORE PUNNETT SQUARES pg 48 COMPLEX INHERITANCE pg 49
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Complex Inheritance pg 49
-Incomplete dominance - a condition in which the trait is neither dominant nor recessive, so genes blend together. red (CRCR) flower X white (CWCW) flower = all pink (CRCW) flowers. OR Red(RR) flower X white (WW) flower = all pink(RW) flowers
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Know your colors?
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Draw the punnett square and fill in.
CR CR CW CRCW CRCW CW CRCW CRCW
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Codominance- a condition where both genes are equally dominant, so both genes show up.
Black chicken(BB) X a white(WW) = checkered chicken(BW).
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Draw the punnett square and fill in.
B B BW BW W W BW BW
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Incomplete or Co- dominance?
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Incomplete or Co- dominance?
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Incomplete or Co- dominance?
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Incomplete or Co- dominance?
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Incomplete or Co- dominance?
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Incomplete or Co- dominance?
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Incomplete or Co- dominance?
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Heterochromia – amount of melanin in the eyes
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Do the following sample complex inheritance punnett squares on pg. 48:
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A homozygous white bull is crossed with a homozygous brown cow.
B=brown W=white Codominance What are the genotypes and phenotypes of the offspring?
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A homozygous white bull is crossed with a homozygous brown cow.
B=brown W=white Codominance W W B B What are the genotypes and phenotypes of the offspring?
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A dark purple flower is crossed with a white flower
A dark purple flower is crossed with a white flower. The traits are incompletely dominant. P=dark purple W=white What are the genotypes and phenotypes of the offspring?
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A dark purple flower is crossed with a white flower
A dark purple flower is crossed with a white flower. The traits are incompletely dominant. P=dark purple W=white P P W W What are the genotypes and phenotypes of the offspring?
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Answer Essential Question
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