Concept explainers
Macroevolution refers to evolutionary changes that
- a. occur in multicellular organisms.
- b. produce new species and groups of species.
- c. occur over long periods of time.
- d. cause changes in allele frequencies.
- e. occur in large mammals.

Introduction: Macroevolution takes place at the level above the species. The evolutionary changes that occur at a large scale constitute macroevolution.
Answer to Problem 1TY
Correct answer: The result of macroevolution is an alteration in the species or group of species. Hence, the correct answer is option b.
Explanation of Solution
Reason for correct answer:
The large scale changes result in the production of new species or a group of species. Such changes are a part of macroevolution. The events are a landmark in the evolutionary history of any species or genus.
Option b. is given as “produce new species and groups of species”.
In contrast to microevolution that causes changes in the genes or nucleotides, macroevolution causes the changes in the phenotype resulting in new species and group of species. Hence, the correct answer is option b.
Reasons for the incorrect answer:
Option a. is given as, “occur in multicellular organisms”.
Macroevolution can take place in multicellular as well as a unicellular organism. It can also occur in both prokaryotic and eukaryotic organisms. Hence, option a. is incorrect.
Option c. is given as, “occur over long periods of time”.
The changes in macroevolution do not necessarily take place in longer periods of time. Hence, option c. is incorrect.
Option d. is given as, “cause changes in allele frequencies”.
The change in the allelic frequencies results in microevolution and not macroevolution. Hence, option d. is incorrect.
Option e. is given as, “occur in large mammals”.
The process of macroevolution can take place in smaller as well as higher organism. Hence, option e. is incorrect.
Hence, the options a., c., d., and e. are incorrect.
Macroevolution is the process that occurs on a larger scale and results in the phenotypic changes of the organism. This cause the origin and development of new type of species or group of species.
Want to see more full solutions like this?
Chapter 24 Solutions
BROOKER BIO 3-HOLE PUNCH W/CONNECT BUND
- fa How many different gametes, f₂ phenotypes and f₂ genotypes can potentially be produced from individuals of the following genotypes? 1) AaBb i) AaBB 11) AABSC- AA Bb Cc Dd EE Cal bsm nortubaarrow_forwardC MasteringHealth MasteringNu × session.healthandnutrition-mastering.pearson.com/myct/itemView?assignment ProblemID=17396416&attemptNo=1&offset=prevarrow_forward10. Your instructor will give you 2 amino acids during the activity session (video 2-7. A. First color all the polar and non-polar covalent bonds in the R groups of your 2 amino acids using the same colors as in #7. Do not color the bonds in the backbone of each amino acid. B. Next, color where all the hydrogen bonds, hydrophobic interactions and ionic bonds could occur in the R group of each amino acid. Use the same colors as in #7. Do not color the bonds in the backbone of each amino acid. C. Position the two amino acids on the page below in an orientation where the two R groups could bond together. Once you are satisfied, staple or tape the amino acids in place and label the bond that you formed between the two R groups. - Polar covalent Bond - Red - Non polar Covalent boND- yellow - Ionic BonD - PINK Hydrogen Bonn - Purple Hydrophobic interaction-green O=C-N H I. H HO H =O CH2 C-C-N HICK H HO H CH2 OH H₂N C = Oarrow_forwardFind the dental formula and enter it in the following format: I3/3 C1/1 P4/4 M2/3 = 42 (this is not the correct number, just the correct format) Please be aware: the upper jaw is intact (all teeth are present). The bottom jaw/mandible is not intact. The front teeth should include 6 total rectangular teeth (3 on each side) and 2 total large triangular teeth (1 on each side).arrow_forward12. Calculate the area of a circle which has a radius of 1200 μm. Give your answer in mm² in scientific notation with the correct number of significant figures.arrow_forwardDescribe the image quality of the B.megaterium at 1000X before adding oil? What does adding oil do to the quality of the image?arrow_forwardWhich of the follwowing cells from this lab do you expect to have a nucleus and why or why not? Ceratium, Bacillus megaterium and Cheek epithelial cells?arrow_forward14. If you determine there to be debris on your ocular lens, explain what is the best way to clean it off without damaging the lens?arrow_forward11. Write a simple formula for converting mm to μm when the number of mm's is known. Use the variable X to represent the number of mm's in your formula.arrow_forward13. When a smear containing cells is dried, the cells shrink due to the loss of water. What technique could you use to visualize and measure living cells without heat-fixing them? Hint: you did this technique in part I.arrow_forward10. Write a simple formula for converting μm to mm when the number of μm's are known. Use the variable X to represent the number of um's in your formula.arrow_forward8. How many μm² is in one cm²; express the result in scientific notation. Show your calculations. 1 cm = 10 mm; 1 mm = 1000 μmarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning





