Concept explainers
To summarize:
The meaning of given information regarding trait inheritance
Introduction:
The environment, which may include sunlight, water and temperature, has an effect on
Answer to Problem 20A
Identical twins have higher concordance rate for a particular trait than fraternal twins because identical twins have same genetic makeup.
Explanation of Solution
The percentage of twins who both express a given trait is called a concordance rate.
Identical twins develop from same fertilized egg, so they have the same genetic make- up. Identical twins are genetically the same. If a trait is inherited, both the twins will have the trait. The traits that occur frequently in identical twins are partially controlled by heredity and the traits that are expressed differently in identical twins are influenced by environment.
Fraternal twins develop from two separate eggs that are fertilized by two separate sperms. So they have different genetic information. They will inherit different traits.
Hence identical twins have higher concordance rate for a particular trait than fraternal twins. A large difference between identical twins and fraternal twins shows a strong genetic influence.
Chapter 11 Solutions
Glencoe Science Biology, Teacher Edition, Hardcover Book Only
Additional Science Textbook Solutions
Microbiology: An Introduction
Genetic Analysis: An Integrated Approach (3rd Edition)
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Microbiology with Diseases by Body System (5th Edition)
Introductory Chemistry (6th Edition)
Organic Chemistry (8th Edition)
- Based on your results from the Mannitol Salt Agar (MSA) media, which of your bacteria were mannitol fermenters and which were not mannitol fermenters?arrow_forwardhelp tutor pleasearrow_forwardQ8. A researcher wants to study the effectiveness of a pill intended to reduce stomach heartburn in pregnant women. The researcher chooses randomly 400 women to participate in this experiment for 9 months of their pregnancy period. They all need to have the same diet. The researcher designs two groups of 200 participants: One group take the real medication intended to reduce heartburn, while the other group take placebo medication. In this study what are: Independent variable: Dependent variable: Control variable: Experimental group: " Control group: If the participants do not know who is consuming the real pills and who is consuming the sugar pills. This study is It happens that 40% of the participants do not find the treatment helpful and drop out after 6 months. The researcher throws out the data from subjects that drop out. What type of bias is there in this study? If the company who makes the medication funds this research, what type of bias might exist in this research work?arrow_forward
- What is behavioral adaptarrow_forward22. Which of the following mutant proteins is expected to have a dominant negative effect when over- expressed in normal cells? a. mutant PI3-kinase that lacks the SH2 domain but retains the kinase function b. mutant Grb2 protein that cannot bind to RTK c. mutant RTK that lacks the extracellular domain d. mutant PDK that has the PH domain but lost the kinase function e. all of the abovearrow_forwardWhat is the label ?arrow_forward
- Can you described the image? Can you explain the question as well their answer and how to get to an answer to an problem like this?arrow_forwardglg 112 mid unit assignment Identifying melting processesarrow_forwardGive only the mode of inheritance consistent with all three pedigrees and only two reasons that support this, nothing more, (it shouldn't take too long)arrow_forward
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education