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Q: What does TF mean on BB scoreboard?
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A plant can have either broad leaves (B) or narrow leaves (b). What cross is represented by the Punnett square shown below?

BB. Bb Bb. bb


What are the possible genotypes of a person with a type B blood?

BB or BO


What two seating sections is the scoreboard located in the astrodome?

910 and 915


What does a punett square show?

The chance of a particular trait being inherited. For each trait there are several alleles, some are dominant and others recessive, for example brown eyes are dominant over blue. The recessive phenotype can only have a genotype with both recessive alleles eg. bb The dominant phenotype can have a genotype with both dominant alleles eg. BB or one of each eg. Bb A punnet square shows the likelihood of a phenotype being inherited from given genotypes, alleles etc... BB and Bb makes BB BB Bb Bb All offspring will have the dominant phenotype (BB or Bb) eg. brown eyes Bb and Bb makes BB Bb Bb bb One in four of the offspring will have the recessive phenotype (bb) eg. blue eyes


If 50 grams of a substance with a temp of 20 degree Celsius and specific heat of 2 is mixed with 200 grams of water with a temperature of 40 degree Celsius what will be the equilibrium temperature of?

Heat gained by one object has to equal the heat lost by the other object. The final temperature of the two objects will be the same.Object 1:mass1 = 50 ginitial T1 = 20 oCCg = 2 J/degree/gramfinal T1 = TfChange in temperature = Tf - T1Q = Cg x change in T x mass= 2 x ( Tf - T1 ) x 50Water:Mass = 200 gCg = 4.18 J/ degree/ gramChange in T = Tf - 40Q = 4.18 x (Tf - 40) x 2004.18 x (Tf - 40) x 200 = -(2 x ( Tf - 20 ) x 50)Tf = 37.9 oC

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