BIOLOGY 106 EXAM 2 SPRING 2015 PLEASE TAKE YOUR TIME AND READ EACH QUESTION CARE
ID: 148213 • Letter: B
Question
BIOLOGY 106 EXAM 2 SPRING 2015 PLEASE TAKE YOUR TIME AND READ EACH QUESTION CAREFULLY AND COMPLETELY.YOU WIL.L. HAVE ONE HOUR TO FINISH THE EXAM. AT THE END OF THIS TIME THOSE QUESTIONS NOT ANSWERED BECOME VOID FOR POINTS, IF YOU HAVE A PROBLEM UNDERSTANDING A QUESTION OR IF IT IS NEBULOUS PLEASE COME TO THE FRONT OF THE ROOM AND ASK ME GOOD LUCK! MULTIPLE CHOICE QUESTIONS. PLEASE TAKE CARE WHILE COMPLETING YOUR SCANTRON. (each questions is worth I points) 1 True or False: A hypothesis is proven when predictions based on it are experimentally verified A) True B) False 2) True or False: The mcasurable or detectable consequence of an organism's genotype is called its phenotype. A) True B) False 3) Quaking aspen can send out underground stems for asexual reproduction. Sexual reproduction is not as common but when it does happen the haploid gametes have 19 chromosomes. How many chromosomes are in the cells of the underground stems? A) 9 B)10 C) 19 D)38 E) either A or C 4) Pelage coloration is influenced by many genetic factors depending on the organism including A) epistasic genes D) temperature sensitive albinism B) X-inactivation E) all are correct C) multiple allelism 5) 6) Which of the following represents a testcross? above D) WW x WW E) none of thoe 7) Anatomical features that have no apparent function but resemble structures of presumed ancestors are most accurately referred to as A) homologous B) adaptive C) analogous D) vestigial 8) Which is the best definition of adaptive radiation? A) An adaptive radiation is a B) An adaptive radiation occurs when a single lineage produces many ecologically diverse descendant species in a relatively short period of time. C) An adaptive radiation is the evolution of a novel trait that makes new ecological opportunities available. D) An adaptive radiation is a group of rapid speciation events star phylogeny 9) Which of the following organisms would be most likely to fossilize? A) a rare slug abundant slug B) a common and abundant turtle C)arare turtle D) a common and 10)Which of the following are typically responsible for contemporary island extinctions? A) carthquakes followed by tsunamis C) overharvesting and introduction of nonnative predators and herbivores D) increased CO2 levels and global warming B) habitat destruction 11) Which statement about polyploidy is cormect?Explanation / Answer
. Answer no. 1:- True
Explanation:- Any hypothesis that hypothesised that this process will be done due to this and it proves by practical or experimentally. this type of hypothesis is true. We see that many of the research, invention and hypothesis are true due to based on the experimental prove and experimentally prove data is always true.
Answer no.3:- D
Explanation:- In asexual reproduction always perform mitotically( chromosome number always 2n) but in sexual reproduction cell dividing by meiotically to maintain n number of the chromosome that form gamete. In Quaking aspen plant underground stem divided by mitotically and maintain a 2n number of chromosome. generally, quaking aspen plant contain n=19 chromosome number i.e 2n=38
Answer no. 13:- A
Explanation:-
Punctuated equilibrium:- That showing little/small evolutionary change for most of its geological time scale in this evolution not in continuous that is the discontinuous process. That have no fossil record.
Gradualism:- This type of evolutions proceed continuously. They should be a record in fossils of small incremental change within a species.
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