Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 19, Problem 1SQ
Alleles are ___________.
- a. alternate forms of a gene
- b. different molecular forms of a chromosome
- c. always homozygous
- d. always heterozygous
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An individual’s ________ is its genotype.
a.
genetic composition
b.
number of chromosomes
c.
physical appearance
8. ____________________ is the reciprocal exchange of DNA between two non-sister chromatids, which resultsin the rearrangement of linked alleles.
Consanguinity is having offspring together who are blood-related. Their children have a higher risk of having a second child with an autosomal recessive condition
A. Both statements are correct
B. Both statements are incorrect
C. Statement 1 is correct. Statement 2 is incorrect
D. Statement 2 is correct. Statement 1 is incorrect
Chapter 19 Solutions
Human Biology (MindTap Course List)
Ch. 19 - Define the difference between (a) gene and allele,...Ch. 19 - Prob. 2RQCh. 19 - What is probability, and how is it applied in...Ch. 19 - What is independent assortment? Does independent...Ch. 19 - Alleles are ___________. a. alternate forms of a...Ch. 19 - A heterozygote has _____. a. only one of the...Ch. 19 - Prob. 3SQCh. 19 - Offspring of a cross AA aa are ______. a. all AA...Ch. 19 - Prob. 5SQCh. 19 - Prob. 6SQ
Ch. 19 - Which statement best fits the principle of...Ch. 19 - Prob. 8SQCh. 19 - Prob. 9SQCh. 19 - Prob. 10SQCh. 19 - One gene has alleles A and a. Another has alleles...Ch. 19 - Still referring to Problem 1, what will be the...Ch. 19 - Go back to Problem 1, and assume you now study a...Ch. 19 - The young woman shown at right has albinismvery...Ch. 19 - When you decide to breed your Labrador retriever...Ch. 19 - The ABO blood system has been used to settle cases...Ch. 19 - Prob. 7CTCh. 19 - A man is homozygous dominant for ten different...Ch. 19 - Prob. 9CTCh. 19 - Bill and Marie each have flat feet, long...Ch. 19 - You decide to breed a pair of guinea pigs, one...
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- A recognized set of symptoms that characterize a genetic disorder is a(n)______ . a. syndrome c. abnormality b. disease d. inheritance patternarrow_forwardColorblindness is a recessive x-linked trait. Which genotype represents a male with normal vision? a. XNXN b. XYN c. XnY d. XNYarrow_forwardWhy is there no trait (letter) on the y chromosome for males in this pedigree? A. Because the trait is X-linked (on the X chromosome) B. Because Ms. Premo made a mistake C. Because we never write anything on the y chromosomearrow_forward
- Baldness is a phenomenon where individuals lose hair as they grow older. As an X-linked recessive gene, what instances do females manifest this trait? a. heterozygous recessive b. heterozygous dominant c. homozygous recessive d. homozygous dominantarrow_forwardA single gene disorder that produces several symptoms is________.arrow_forwardGENETICS Alberta is phenotypically normal, but her brother (Rodrigo) has albinism, which is caused by an autosomal recessive mutation. The probability that Alberta is a carrier is______?arrow_forward
- The cell-free DNA test name was coined from the fact that ______. A. fetal DNA floats freely in the mother's blood, not inside the cell. B. no cell sample is required C. cells move freely in the fetal DNA D. None of the chocies are correctarrow_forwardMutations resulting from x-radiation are due to changes in ___________. A. ATP B. DNA C. ADP D. Rharrow_forwardYour blood type is a: A. genotype B. phenotypearrow_forward
- Klinefelter syndrome (XXY) can most be easily diagnosed by_______ . a. pedigree analysis c. karyotyping b. aneuploidy d. phenotypic treatmentarrow_forwardPlease choose the correct answer. If a recessive mutation kills an individual during the early stages of its development, what is the possible mode of inheritance exhibited if a recessive F1 with heterozygous parents survives? a. epigenetic inheritance b. maternal inheritance c. maternal effect d. organelle inheritancearrow_forwardThis example can be considered as ______________. A.Modifier gene B.Gene redundancy C.Co-dominance D.Incomplete dominancearrow_forward
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