Which of the following statements about pesticides and herbicides is not true?
a. they can en...
Biology, 19.09.2019 20:40 mackdoolittle1
Which of the following statements about pesticides and herbicides is not true?
a. they can enter waterways, polluting them.
b. once the pesticides and herbicides break down, they are no longer harmful.
c. pesticides and herbicides are widely used in agriculture.
d. pesticides and herbicides can have negative effects on the environment.
Answers: 2
Biology, 21.06.2019 12:30
Two true-breeding pea plants were crossed. one parent is round, terminal, violet, constricted, while the other expresses the respective contrasting phenotypes of wrinkled, axial, white, full. the four pairs of contrasting traits are controlled by four genes, each located on a separate chromosome. in the f1 only round, axial, violet, and full were expressed. in the f2, all possible combinations of these traits were expressed in ratios consistent with mendelian inheritance. (a) what conclusion about the inheritance of the traits can be drawn based on the f1 results? (b) in the f2 results, which phenotype appeared most frequently? what mathematical expression predicts the probability of occurrence of this phenotype? (c) which f2 phenotype is expected to occur least frequently? what mathematical expression predicts this probability? (d) in the f2 generation, how often is either of the p1 phenotypes likely to occur? express your answer as a fraction (example: 3/16).
Answers: 3
Biology, 22.06.2019 02:30
Plz ! a frog has a genetic mutation in skin cells that causes part of its skin to turn orange the frog will not pass this genetic mutation onto its offspring because, a. the offspring will inherit skin cells from the other parent. b. mutated skin cells cannot divide and produce daughter skin cells. c. skin cells do not contribute genetic material to sex cells. d. parents do not contribute genetic material to their offspring.
Answers: 2
Biology, 22.06.2019 08:00
What advantages does a pedigree have over a written passage?
Answers: 3
Geography, 17.07.2021 01:20
Mathematics, 17.07.2021 01:20
Social Studies, 17.07.2021 01:20
History, 17.07.2021 01:20
English, 17.07.2021 01:20
History, 17.07.2021 01:30
Mathematics, 17.07.2021 01:30
Mathematics, 17.07.2021 01:30