BIOL 329 Lecture Notes - Lecture 46: Soricomorpha, Carnivora, Even-Toed Ungulate
8 May 2018
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Lect 46
Gene drive for control of exotics. Gene drives = genetic constructions that can be inserted into DNA to
change the rules of inheritance in sexual reproduction. They can boost the chances that a particular trait
will pass from a parent offspring from 50-50 to nearly 100%.
The technology so far is limited in the lab but many scientists hope to eventually use it to control
disease-carrying insects, invasive species and other problematic organisms. Drives the gene to fixation.
Could be a gene drive for sex, etc. Only a small number of individuals are needed to drive the gene to
fixation.
Use CRISPR nuclease Cas9 to serve as a general method for spreading altered traits through wild
populations over many generations. Works well for insects. Not well for birds because they return to
their original habitat; altered traits could spread through entire species and wipe it out.
Will not be tested on gene drive
Exam question: walk through Mystic Vale would give insight to this. Genetically similar species in the
same habitat. Paper on coloration of European songbirds – irrelevant. Evaluated it without context of
the habitat where birds live in.
REVIEW
Raptors: biomagnification, native vs invasive species.
Cetaceans (guest lecture): aspects of sound production – what was being characterized. Relative
abundance of cetaceans, how many species.
Caribou lecture: no questions from guest lecture but general info.
Relative order of abundance of mammals: rodents, chiroptera, soricomorpha, primates, carnivora,
artiodactyla. Keep in mind: mammals of BC
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Gene drives = genetic constructions that can be inserted into dna to change the rules of inheritance in sexual reproduction. They can boost the chances that a particular trait will pass from a parent offspring from 50-50 to nearly 100%. The technology so far is limited in the lab but many scientists hope to eventually use it to control disease-carrying insects, invasive species and other problematic organisms. Could be a gene drive for sex, etc. Only a small number of individuals are needed to drive the gene to fixation. Use crispr nuclease cas9 to serve as a general method for spreading altered traits through wild populations over many generations. Not well for birds because they return to their original habitat; altered traits could spread through entire species and wipe it out. Exam question: walk through mystic vale would give insight to this. Paper on coloration of european songbirds irrelevant. Evaluated it without context of the habitat where birds live in.
