BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 13, Problem 3A
Down syndrome is the result of trisomy for chromosome 21. Why is this trisomy viable and trisomy for most other chromosomes is not?
a. Chromosome 21 is a large chromosome and excess genetic material is less harmful.
b. Chromosome 21 behaves differently in meiosis I than the other chromosomes.
c. Chromosome 21 is a small chromosome with few genes so this does less to disrupt the genome.
d. Chromosome 21 is less prone to nondisjunction than other chromosomes.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
(A) 25
20
20
15
NPP (Mg C/ha/yr)
10
10
5
0
0
2,000
4,000
6,000
ECOLOGY 4e, Figure 20.11 (Part 1)
2017 Sinauer Associates, Inc.
Average annual precipitation (mm)
8,000
explain the cascade of events (starting with relaxing trade winds) that occurs during El Niño in the eastern Pacific (off the coasts of California/North America and Peru/South America) and which lead to food-chain collapse
- start with changes in the physical/oceanographic conditions, andthen systematically describe the cascading effects at each level of the food chain
-
3) Which statement(s) about the Pacific Decadal Oscillation (PDO) is/are TRUE? CIRCLE ALL
THAT APPLY.
A. It is a major driver of salmon populations in the Pacific
B. It affects sea surface temperatures in the eastern Pacific
C. Its cycles typically do not last as long as those of ENSO
D. Evidence that it has occurred over many centuries has been gathered from tree
ring data
Chapter 13 Solutions
BIOLOGY
Ch. 13.1 - Describe sex-linked inheritance in fruit flies.Ch. 13.1 - Prob. 2LOCh. 13.2 - Prob. 1LOCh. 13.2 - Explain the genetic consequences of dosage...Ch. 13.3 - Prob. 1LOCh. 13.4 - Prob. 1LOCh. 13.4 - Explain the relationship between frequency of...Ch. 13.4 - Prob. 3LOCh. 13.5 - Prob. 1LOCh. 13.5 - Prob. 2LO
Ch. 13.5 - Prob. 3LOCh. 13 - Inquiry question Mendel did not examine plant...Ch. 13 - What would Mendel have observed in a dihybrid...Ch. 13 - Prob. 2DACh. 13 - Why is the white-eye phenotype always observed in...Ch. 13 - In an organisms genome, autosomes are a. the...Ch. 13 - What cellular process is responsible for genetic...Ch. 13 - The map distance between two genes is determined...Ch. 13 - How many map units separate two alleles if the...Ch. 13 - How does maternal inheritance of mitochondrial...Ch. 13 - Which of the following genotypes due to...Ch. 13 - Prob. 1ACh. 13 - As real genetic distance increases, the distance...Ch. 13 - Down syndrome is the result of trisomy for...Ch. 13 - Genes that are on the same chromosome can show...Ch. 13 - The A and B genes are 10 cM apart on a chromosome....Ch. 13 - Prob. 6ACh. 13 - Color blindness is caused by a sex-linked,...Ch. 13 - Assume that the genes for seed color and seed...Ch. 13 - A low frequency of calico cats are male (about...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 4.arrow_forward2arrow_forward1. 2. 3. Marine fish cells are hypotonic compared to their seawater environment; their cells lose water by osmosis and gain solutes. If you add heterotrophic respiration and autotrophic respiration together and then subtract that value from gross primary productivity, then you have a more refined estimate of ecosystem carbon storage than NEE. Differential heating due to the earth's tilt generates the global wind AND oceanic circulation patternsarrow_forward
- KD 200- 116- 66- Vec ATF6 (670) ATF6 (402) ATF6 (373) ATF6 (366) I I 45- 1 2 3 4 5 ATFG (360) (e/c) 9V ATFG (402) g ant- ATF anti-KDEL DAPI barrow_forwardWestern blot results: what information can you get? Presence of proteins of your interest Levels of protein expression Levels of protein activation (must use activation state-specific antibody) Decreased function of the ATM kinase in aging mice. A C57BL/6 female 6 month Con IR 20 month C57BL/6 male 6 month 28 month Con IR Con IR Con IR p-ATM (S1981) ATM P-p53 (ser18) Actinarrow_forwardDoes it show the level of proteins? What about the amount? Levels of protein activation? How can you tell? Does the thickness tell you anything? What about the number of the lines?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License