11 Jun Housekeeping – genes are expressed
Question
Question 241pts Housekeeping genes
are expressed by most of the cells in an organism.
prevent repressors from binding the promoter.
prevent operators from expressing genes.
break down a cell’s DNA.
Flag this QuestionQuestion 251pts Which of the following statements about the evolutionary relatedness of organisms is FALSE?
Predictions of evolutionary relatedness that are based on the fossil record often agree with predictions that are based on continental drift.
Predictions of evolutionary relatedness that are based on fossil evidence often agree with those that are based on protein sequences.
Predictions that are based on DNA sequences provide the strongest evidence that two organisms are related.
Predictions of evolutionary relatedness that are based on DNA often contradict those that are based on anatomical evidence.
Flag this QuestionQuestion 261pts Many organisms are darker on their dorsal surface and lighter on their ventral surface. They are difficult to see from both above and below because of this ________, which is called countershading.
fixation
adaptation
pattern of resistance
selection pressure
Flag this QuestionQuestion 271pts Which of the following statements best describes what happens in gene flow?
Crossing-over creates new combinations of alleles during gamete formation.
Chance events alter a population’s gene pool.
New individuals that join a population contribute their alleles to its gene pool.
Alleles that make an individual more successful move from one population to another.
Flag this QuestionQuestion 281pts Suppose a population’s gene pool consists of theAandaalleles in a ratio of 80:20. If the population has reached equilibrium, the next generation will consist of genotypes in a ratio of
25AA:50Aa:25aa.
36AA:28Aa:36aa.
36AA:48Aa:16aa.
64AA:32Aa:4aa.
Flag this QuestionQuestion 291pts Flounder (a type of fish) generally match the color of the sandy bottoms of the bodies of water they inhabit. Their color functions like camouflage, making them difficult for predators to detect. This is an example of
guided mutation.
speciation.
adaptation.
continental drift.
Flag this QuestionQuestion 301pts Peppered moths are generally light in color and blend into the trunks of the trees they live on. Populations of peppered moths that are found in areas where soot has blackened the tree trunks are dark in color. This example demonstrates
natural selection.
vestigial coloration.
genetic drift.
artificial selection.
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.