Match each of the following items with all the terms it applies to:
To match: Each item with the applicable terms.
Answer to Problem 1RQ
Correct answer:
(a) X or Y | 3. sperm and ova, 4. sex chromosomes, 5. germ cells |
(b) Inactivated X chromosome | 8. Barr body |
(c) XX | 2. fertilized egg, 7. female chromosomes |
(d) XY | 2. fertilized egg, 6. male chromosomes |
(e) XX or XY | 2. fertilized egg |
(f) Autosomes | 1. chromosomes other than sex chromosomes |
Explanation of Solution
- (a) X or Y – 3. sperm and ova, 4. sex chromosomes, 5. germ cells
The cells which contain half the number of chromosomes are known as germ cells. Sperm and ova are germ cells produced by males and females, respectively. Each germ cell has 23 chromosomes, 22 autosomes, and 1 sex chromosome. Male germ cells (sperms) can have either X or Y chromosome, whereas female germ cells (ova) will always have an X chromosome.
- (b) Inactivated X chromosome – 8. Barr body
Female sex chromosomes have genotype XX. One X out of these is condensed and inactive. It appears to be a small and dense stained structure present in the nuclei of the cells. This inactive and condensed X chromosome is known as a Barr body. Barr bodies are absent in males.
- (c) XX - 2. fertilized egg, 7. female chromosomes
Half of the male germ cells contain an X chromosome, and the other half has Y chromosome. If male germ cell carrying X chromosome fuses with the female germ cell, then the fertilized egg would have XX chromosomes. Presence of XX chromosomes indicates that the fetus is female.
- (d) XY - 2. fertilized egg, 6. male chromosomes
X and Y chromosomes are sex chromosomes present in humans. The fusion of male germ cell containing Y chromosome and female germ cell would result in the production of zygote with genotype XY.
- (e) XX or XY – 2. fertilized egg
In humans, male and female germ cells have 1 sex chromosome each. About 50% of male germ cells have X chromosome whereas the other 50% has Y chromosome. All the female germ cells have X chromosome in them. The fusion of male and female germ cells inside the female body is known as fertilization. The zygote formed after fertilization has double chromosomes as compared to the germ cells. This zygote or fertilized egg will have genotype XX in case of females and XY in case of males.
- (f) Autosomes – 1.chromosomes other than sex chromosomes
Every human being has 46 chromosomes that is 23 pairs of chromosomes. Out of these 23 pairs, 22 are autosomes, and 1 pair of the chromosome is sex chromosome. Autosomes are responsible for various features of the human body such as eye color, height, hair color, and many more.
Want to see more full solutions like this?
Chapter 26 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Additional Science Textbook Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Human Anatomy & Physiology (2nd Edition)
Campbell Biology (11th Edition)
College Physics: A Strategic Approach (3rd Edition)
Anatomy & Physiology (6th Edition)
- Adaptations to a Changing Environment Why is it necessary for organisms to have the ability to adapt? Why is the current environment making it difficult for organisms like the monarch butterfly to adapt? Explain how organisms develop adaptations.arrow_forwardArtificial Selection: Explain how artificial selection is like natural selection and whether the experimental procedure shown in the video could be used to alter other traits. Why are quail eggs useful for this experiment on selection?arrow_forwardDon't give AI generated solution otherwise I will give you downwardarrow_forward
- Hello, Can tou please help me to develope the next topic (in a esquematic format) please?: Function and Benefits of Compound Microscopes Thank you in advance!arrow_forwardIdentify the AMA CPT assistant that you have chosen. Explain your interpretation of the AMA CPT assistant. Explain how this AMA CPT assistant will help you in the future.arrow_forwardwhat is the difference between drug education programs and drug prevention programsarrow_forward
- What is the formula of Evolution? Define each item.arrow_forwardDefine the following concepts from Genetic Algorithms: Mutation of an organism and mutation probabilityarrow_forwardFitness 6. The primary theory to explain the evolution of cooperation among relatives is Kin Selection. The graph below shows how Kin Selection theory can be used to explain cooperative displays in male wild turkeys. B When paired, subordinant males increase the reproductive success of their solo, dominant brothers. 0.9 C 0 Dominant Solo EVOLUTION Se, Box 13.2 © 2023 Oxford University Press rB rB-C Direct Indirect Fitness fitness fitness gain Subordinate 19 Fitness After A. H. Krakauer. 2005. Nature 434: 69-72 r = 0.42 Subordinant Dominant a) Use Hamilton's Rule to show how Kin Selection can support the evolution of cooperation in this system. Show the math. (4 b) Assume that the average relatedness among male turkeys in displaying pairs was instead r = 0.10. Could kin selection still explain the cooperative display behavior (show math)? In this case, what alternative explanation could you give for the behavior? (4 pts) 7. In vampire bats (pictured below), group members that have fed…arrow_forward
- Examine the following mechanism and classify the role of each labeled species in the table below. Check all the boxes that applyarrow_forward1. Define and explain the two primary evolutionary consequences of interspecific competitionarrow_forward2 A linear fragment of DNA containing the Insulin receptor gene is shown below, where boxes represent exons and lines represent introns. Assume transcription initiates at the leftmost EcoRI site. Sizes in kb are indicated below each segment. Vertical arrows indicate restriction enzyme recognition sites for Xbal and EcoRI in the Insulin receptor gene. Horizontal arrows indicate positions of forward and reverse PCR primers. The Horizontal line indicates sequences in probe A. Probe A EcoRI Xbal t + XbaI + 0.5kb | 0.5 kb | 0.5 kb | 0.5kb | 0.5 kb | 0.5 kb | 1.0 kb EcoRI On the gel below, indicate the patterns of bands expected for each DNA sample Lane 1: EcoRI digest of the insulin receptor gene Lane 2: EcoRI + Xbal digest of the insulin receptor gene Lane 3: Southern blot of the EcoRI + Xbal digest insulin receptor gene probed with probe A Lane 4: PCR of the insulin receptor cDNA using the primers indicated Markers 6 5 4 1 0.5 1 2 3 4arrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningCase Studies In Health Information ManagementBiologyISBN:9781337676908Author:SCHNERINGPublisher:Cengage