Occasionally triploid organisms occur and are able to produce gametes. Hawkweed
ID: 167813 • Letter: O
Question
Occasionally triploid organisms occur and are able to produce gametes. Hawkweed (2n = 8). Let's say a triploid hawkweed occurs, produces gametes, and each of these gametes is fertilized by haploid gametes from a diploid hawkweed. Fill in the table with likely counts for each chromosome in several plausible zygotes from this cross. Let's consider genetic methods to control disease vectors. Which of a gene drive affected individual will have a higher rate of the desired allele than Mendelian inheritance? A homing endonuclease gene introduces a double stranded break. Non-homologous end joining and homology-directed repair both copy the desired allele into the organism. Endonucleases are easily engineered to target a specific sequence. Which of the following are examples of transgenesis is being used to alter a disease vector? (Circle all that apply) Inserting a gene from a sea cucumber into a mosquito so that mosquitos produce hemolytic lectin. Modifying allelic frequency to make a desired trait more common. Using dsRNA to knockdown gene function. Implanting a new gene causing insect sterility.Explanation / Answer
a triploid organism makes 3 kinds of gametes 1N, 2N and 3N.
A diploid organism makes 1N.
(A) Points 1, 2, 3 and 4are applicable to gene drive.
(B) all four are the example
Gamete from triploid plant gamete from diploid plant ploidy of the offspring 1N 1N 2N 2N 1N 3N 3N 1N 4NRelated Questions
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