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 7SQ
Which statement best fits the principle of segregation?
- a. Units of heredity are transmitted to offspring.
- b. Two genes of a pair separate from each other during meiosis.
- c. Members of a population become segregated.
- d. A segregating pair of genes is sorted out into gametes independently of how gene pairs located on other chromosomes are sorted out.
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Students have asked these similar questions
A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels. Which term best describes the relationship between the two alleles?
Choose 1 answer:
A. Genetic recombination
B. Codominance
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D.Chimerism
What is it called when chromosomes fail to separate properly during meiosis?
A. Nondisjunction
B. Karyotype
C. Chromosomal separation failure
D. Inappropriate separation
E. Karyokinesis
What word below best describes the orientation of maternal relative to paternal chromatids of each bivalent chromosome at the metaphase plate in Meiosis I?
A.
ordered
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random
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organized
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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- What is the fundamental difference between mitosis and meiosis? A. DNA is replicated twice in meiosis, but only once in mitosis. B. The number of DNA molecules per cell nucleus is cut in half in meiosis but remains constant in mitosis. C. The number of chromosomes doubles in meiosis, whereas it stays the same in mitosis. D. Mitosis involves two cell divisions, whereas meiosis only involves one.arrow_forwardRecombination frequency shows? A. Shows the likelihood of gametes being carried over during crossover. B. Shows the likelihood of traits being carried over during crossover. C. Shows the likelihood of genes being carried over during meiosis. D. Shows the likelihood of traits being carried over during mitosisarrow_forwardConsider a diploid cell from an unknown organism that undergoes meiosis. The four gametes produced have 8, 8, 7, and 5 chromosomes. When did nondisjunction occur? a.Meiosis I and II b.Only meiosis I c.Mitosis d.Only meiosis II e.Nondisjunction did not occurarrow_forward
- The set of specific alleles on a single chromosome is known as what? a. A phenotype b. Diploidy c. A genetic locus d. A haplotypearrow_forwardHow can the order of three linked genes (A, B, and C) on the same chromosome be determined? A. Calculating the frequency of recombination between genes. B. Gene order cannot be determined by looking at the results of a cross. C. Look for parental phenotypes. D. Look for single-crossover phenotypes involving the wild-type and mutant alleles of genes A, B, and C.arrow_forwardOrganism X has the genotype Ccdd. How many different types of gametes can it make and in what proportion? * A. 3 Cd 1 cd B. 1 CD: 1 Cd : 1 cD 1 cd C. 1 Cc : 1 dd D. 1 Cd 1 cd A human female "carrier" who is heterozygous for the recessive, sex-linked trait hemophilia (XHXH), marries a normal male (XHY). What proportion of their male progeny will show the trait? A. 1/4 B. 1/2 C. 0 D. Allarrow_forward
- What is necessary for a chromosome bridge to occur? a. centromeres are necessary b. chromosome bridges only apply to meiosis c. centromeres and fusion d. fusion is necessary e. applies only to mitosis and involves fusion and centromeresarrow_forwardWhich observation led Thomas Morgan to realize that the gene for fruit fly eye color was located on a sex chromosome? a. He noticed that only male F2 flies could have white eyes; no females displayed this trait. b. He saw that the F2 generation of flies had the classic 3:1 phenotypic ratio of red eyes to white eyes c. He read it in a biology textbook d. He noticed that only mutant flies had white eyesarrow_forwardYou have a cell with 4 homologous pairs of chromosomes. Assuming no crossing over, how many combinations of chromosomes are possible in cells after meiosis is completed. Group of answer choices A. 4 B. 16 C. 32 D. 8arrow_forward
- Even though the processes are very similar, mitosis and meiosis are two very distinct processes. What is the difference between meiosis and mitosis? a. Mitosis results in two identical sister cells genetically identical to the original parent cell, while meiosis also starts with diploid but results in haploid cells. b. Mitosis only occurs in plants and single cell organisms, while meiosis only occurs in animals. c. Mitosis starts with diploid but results in haploid cells, while meiosis results in two identical sister cells genetically identical to the original parent cell.arrow_forwardThe mating below shows the sex chromosome found in two parents and their resulting offspring. Use this family information to answer the following questions. Xfmr1 Y x Xfmr1 XFMR1 → XFMR1 XFMR1Y How many Barr bodies would the child have? a. 3 b. 2 c. 1 d. 0 e. Cannot be determinedarrow_forwardWhen two genes are genetically “linked”, gametes produced during meiosis will usually contain allele combinations that mimic the way the alleles were placed on the parent cell’s chromosomes unless what process successfully occurs? Select one: a. Disjunction b. Self-fertilization c. Crossing over/recombination d. Aneuploidyarrow_forward
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