
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)
- Biopharmaceutics and Pharmacokinetics:Two-Compartment Model Zero-Order Absorption Questions SHOW ALL WORK, including equation used, variables used and each step to your solution, report your regression lines and axes names (with units if appropriate) :Calculate a-q a) B1, b) B2, c) hybrid rate constant (1) d) hybrid rate constant (2) e) t1/2,dist f) t1/2,elim g) k10 h) k12 i) k21 j) initial concentration (C0) k) central compartment volume (V1) l) steady-state volume (Vss) m) clearance (CL) AUC (0→10 min) using trapezoidal rule n) AUC (20→30 min) using trapezoidal rule o) AUCtail (AUC360→∞) p) total AUC (using short cut method) q) volume from AUC (VAUC)arrow_forwardWhat are some external influences that keep people from making healthy eating decisions?arrow_forwardWhat type of structure(s) would you expect to see in peripheral membrane proteins? (mark all that apply) A. Amphipathic alpha helix (one side is hydrophilic and one side is hydrophobic) B. A hydrophobic beta barrel C. A hydrophobic alpha helix D. A chemical group attached to the protein that can anchor it to the membranearrow_forward
- Temporal flexibility (the ability to change over time) of actin structures within a cell is maintained by… A. The growth/shrinkage cycle B. Periodic catastrophe C. GTP hydrolysis D. Treadmilling E. None of the abovearrow_forwardDuring in vitro polymerization of actin and microtubule filaments from their subunits, what causes the initial delay in filament growth? A.Nucleation B.Reaching homeostasis C.Nucleotide exchange D.ATP or GTP hydrolysis E.Treadmillingarrow_forwardYou expect to find which of the following in the Microtubule Organizing Center (MTOC)...(mark all that apply) A. Gamma tubulin B. XMAP215 C. Centrioles D. Kinesin-13arrow_forward
- The actin-nucleating protein formin has flexible “arms” containing binding sites that help recruit subunits in order to enhance microfilament polymerization. What protein binds these sites? A.Thymosin B.Profilin C.Cofilin D.Actin E.Tropomodulinarrow_forwardWhile investigating an unidentified motor protein, you discover that it has two heads that bind to actin. Based on this information, you could confidently determine that it is NOT... (mark all that apply) A. A myosin I motor B. A dynein motor C. A myosin VI motor D. A kinesin motorarrow_forwardYou isolate the plasma membrane of cells and find that . . . A. it contains regions with different lipid compositions B. it has different lipid types on the outer and cytosolic leaflets of the membrane C. neither are possible D. A and B both occurarrow_forward
- You are studying the mobility of a transmembrane protein that contains extracellular domains, one transmembrane domain, and a large cytosolic domain. Under normal conditions, this protein is confined to a particular region of the membrane due to the cortical actin cytoskeletal network. Which of the following changes is most likely to increase mobility of this protein beyond the normal restricted region of the membrane? A. Increased temperature B. Protease cleavage of the extracellular domain of the protein C. Binding to a free-floating extracellular ligand, such as a hormone D. Protease cleavage of the cytosolic domain of the protein E. Aggregation of the protein with other transmembrane proteinsarrow_forwardTopic: Benthic invertebrates as an indicator species for climate change, mapping changes in ecosystems (Historical Analysis & GIS) What objects or events has the team chosen to analyze? How does your team wish to delineate the domain or scale in which these objects or events operate? How does that limited domain facilitate a more feasible research project? What is your understanding of their relationships to other objects and events? Are you excluding other things from consideration which may influence the phenomena you seek to understand? Examples of such exclusions might include certain air-born pollutants; a general class of water bodies near Ottawa, or measurements recorded at other months of the year; interview participants from other organizations that are involved in the development of your central topic or issue. In what ways do your research questions follow as the most appropriate and/or most practical questions (given the circumstances) to pursue to better understand…arrow_forwardThe Esp gene encodes a protein that alters the structure of the insulin receptor on osteoblasts and interferes with the binding of insulin to the receptor. A researcher created a group of osteoblasts with an Esp mutation that prevented the production of a functional Esp product (mutant). The researcher then exposed the mutant strain and a normal strain that expresses Esp to glucose and compared the levels of insulin in the blood near the osteoblasts (Figure 2). Which of the following claims is most consistent with the data shown in Figure 2 ? A Esp expression is necessary to prevent the overproduction of insulin. B Esp protein does not regulate blood-sarrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningCase Studies In Health Information ManagementBiologyISBN:9781337676908Author:SCHNERINGPublisher:Cengage
