Amoeba Sisters Amoeba Sisters Video SELECT Recap: Incomplete Dominance, Codominance,
Polygenic Traits, and Epistasis (Non-Mendelian Inheritance)
AP
Codominance can be observed in some breeds of chicken. Black chickens can result from BB alleles. White chickens can
result from WW alleles. A chicken with alleles BW can be speckled with black and white.
8. Show a Punnett square with a Mendelian cross between two chickens that pre BW x BW.
9. According to your work, complete the following phenotype ratio:
10. According to your work, complete the following genotype ratio:
Black:
BB:
Speckled:
BW:
White
ww
emplete
Mendelian
Non-Mendelian
Incomplete dominance can be observed in snapdragons. Snapdragon flowers
that have two RR alleles have a red phenotype. Snapdragon flowers with a rr
have a white phenotype. Snapdragon flowers that are Rr are pink.
11. Fill in the two Punnett squares in diagram at right.
12. This is a non-Mendelian trait, but how could this be different if the trait
was Mendelian?
R
R
13. Explain the Graphic! How does this relate to epistasis?
BBCC
Bbcc
bbcc
STUDY
14. Apply the Vocab/ The below graphic is a follow-up from
the graphic in #13. Circle genotypes below that you would
expect to result in white coloration and explain why.
Eplutasid
Bbco
BC во
bc bg
вс| BBcc | BBCс | вьсс | высо
высо
B BBCO BBC вьсс | Bbca
BBCO
высо
bbcc
FL
BBco
Bbcc
bbcc
bc Bbcc
Bbco bbccbbco
& Le
bel высо
Bbcc
bbco bbcc
& wr
and
b) Spe
SH
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__1__ is a climate cycle where the temperature of the __2__ ocean changes because of movements of air and ocean currents. during this period, the trade winds in the south __3__ , causing the __4__ water to move from the __5__ region to the __6__ region. 1) el nino or the monsoon 2) atlantic, indian, or pacific 3) reverse, strengthen, or weaken 4) cold or warm 5) eastern or western 6) eastern or western

Experiments in environmental toxicology can sometimes be manipulative experiments in which the researcher actively chooses and manipulates the independent variable. in hunt's study, for example, dosages of bpa were manipulated and the effects were measured. in manipulative studies, the researcher controls all the other variables in the experiment, so any health effects observed in the test subjects can be attributed to differences in the independent variable. in other cases, researchers use natural experiments in which the dependent variable (typically a measure of organism health) is measured under differing contexts that are not manipulated. say, for example, that an accidental chemical spill contaminates five ponds. to determine the possible effects of the toxic chemical on frogs, a researcher could compare the hatching rate of frog eggs laid in those five ponds to the hatching rate of eggs laid in five uncontaminated ponds nearby. this would be an example of a natural experiment because concentrations of the toxic chemical in the ponds were not controlled by the experimenter, but rather resulted from the chemical spill. drag type of experiment on the left to the example of experiment on the right. blood concentrations of bpa in college students are compared to their recent manipulative consumption of canned food items 2. the feeding behavior of fish in streams that receive acidic runoff from strip mines is compared to the feeding behavior of fish in unaffected streams. the deformity rate in baby birds from nests in pesticide-sprayed fields is compared to the deformity rate in birds from nests in unsprayed fields 4 tumor development is compared in mice exposed to five dosages of a known carcinogen in the laboratory foraging activity levels are compared in tadpoles exposed to four concentrations of toxic metals in the laboratory. growth of corn plants is compared in field plots sprayed with three different dosage: s of weed killer 7 bpa concentrations in the urine of people with diabetes are compared to bpa concentrations in the urine of people without diabetes - natural; manipulative

According to the cladogram, which organisms have roundworms as a common ancestor?