14065 Flashcards
The endosymbiont theory supports abiogenesis.
False
Mark all the following genetic disorders that result in an outwardly normal phenotype.
Physical Appearance
Bacteria pick up genes accidentally from viruses that they are infected with by _____.
Transduction
Lactose can induce the lac operon to make enzymes to digest lactose.
True
Two different species can never interbreed and produce fertile offspring.
False
Heliconius butterflies and Passion vines exhibit _____.
Leoevolution
The most common cause of background extinction is disease.
False
All of the following in your diet that would help prevent cancer
-Cruciferous Vegetables
-Lycopenes
-Anthocyanins
Uncontrolled cell division which normally leads to a tumor is called?
Hyperplasia
Down syndrome is caused by?
Trisomy
How many autosomes do humans have in their cells normally?
44
Common mutagens and can work as initiators in cancer.
- Benzopyrenes
- Nitrosamines
Bacteriophages are bacteria that attack viruses.
False
Achondroplasia is a recessive genetic disease.
False
How many chromosomes are found in most human cells?
46
The _____ works as a red/green light. It can be blocked by the repressor protein.
Operator Gene
DNA has a positive charge so in gel electrophoresis it would be attracted to the negative pole.
False
Natural selection occurs in individuals.
True
Founder effect is always negative in a population.
False
Mark all of the following that develop from ectoderm.
Hair and Nails
The Nervous System
Pluripotent stem cells have the ability to become all types of cells.
False
Insect wings and bird wings are an example of _____.
Analogous
Mules are normally sterile due to an odd number of chromosomes.
True
Evolution happens in individuals.
False
In gel electrophoresis, the smaller DNA fragments move faster through the gel than the heavier fragments, thus creating different bands.
True
In general, aneuploidy is more severe when they involve sex chromosomes rather than autosomes
False
Is a solid ball of cells, and it occurs at about day 3 in humans.
Morula
Birds are more closely related to some of the dinosaurs than some of the dinosaurs are to each other.
True
Is a fertilized egg.
Zygote
What embryonic stage is used in the chimera studies we discussed in class?
Blastocyst
Sickle cell anemia is an example of a _______ mutation.
Missense Mutation
Some human diseases, like hemophilia, have been successfully treated with gene therapy.
True
How many defective genes do you have to inherit to get a recessive genetic disease?
2
Shark and Dolphins exhibit
Convergent evolution
___ Can prevent cancer
Antipromoters
Artic foxes and desert foxes’ exhibit
Divergent evolution
Mark all of the following that develop from mesoderm
The skeletal system
The cardiovascular or Circulatory system
What kind of gene codes for the repressor protein
Regulatory Gene
The ___ normally codes for enzymes/proteins that are important in anabolism or catabolism
Structural Genes
Polyploidy in plants is usually fine but polyploidy in animals usually results in death
True
Mark all of the following that are common mutagens & can work initiators in cancer
Benzopyrenes
Nitrosamines
The Iac operon is normally blocked by a repressor protein
True
Dietary fat can work as a promoter, causing cancer cells to grow faster
True
Aposematic coloring is camouflage where organisms can hide effectively in their environment
False
