While working with a purple flower, you identify a set of mutant flowers that are blue and another set of mutants that are red. You hypothesize that the genes that regulate flower color act together in the biosynthetic pathway displayed below:
Blue pigment --> red pigment --> purple pigment
To test your hypothesis, you cross two heterozygous purple flowers together and observe the offspring. If your hypothesis is correct, which of the following phenotypic ratios do you expect to observe?
a. 9 purple: 3 blue: 3: red: 1 white
b. 9 purple: 3 blue: 4 red
c. 9 purple: 4 blue: 3 red
d. 12 purple: 3 blue: 1 red
e. 12 purple: 1 blue: 3 red
f. 9 purple: 7 white
While working with a purple flower, you identify a set of mutant flowers that are blue and another set of mutants that are red. You hypothesize that the genes that regulate flower color act together in the biosynthetic pathway displayed below:
Blue pigment --> red pigment --> purple pigment
To test your hypothesis, you cross two heterozygous purple flowers together and observe the offspring. If your hypothesis is correct, which of the following phenotypic ratios do you expect to observe?
a. | 9 purple: 3 blue: 3: red: 1 white | |
b. | 9 purple: 3 blue: 4 red | |
c. | 9 purple: 4 blue: 3 red | |
d. | 12 purple: 3 blue: 1 red | |
e. | 12 purple: 1 blue: 3 red | |
f. | 9 purple: 7 white |
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If I observe a bed of mussels on the coast of California in which five species live where the abundances of each species are 22 for species #1, 466 for species #2, 719 for species #3, 18 for species #4, and 2,699 for species #5, what is the probability that I would randomly pick the third species?
(answer to 2 decimal places)
QUESTION 12
Which of the following calculations require that you utilize the addition rule?
A) Calculate the probability of a child having either sickle-cell anemia or cystic fibrosis if parents are each heterozygous for both | |||||
B) Calculate the probability of each of four children having cystic fibrosis if the parents are both heterozygous.
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C) Calculate the probability of children with both cystic fibrosis and polydactyly when parents are each heterozygous for both genes | |||||
D) Calculate the probability of purple flower color in a plot of 50 plants seeded from a self-fertilizing heterozygous parent plant | |||||
E) | Calculate the probability of black offspring from the cross AaBb à AaBb, when B is the symbol for black |