Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 6.4, Problem 1COMQ
A tetrad of spores in an ascus is the product of
a. one meiotic division.
b. two meiotic divisions.
c. one meiotic division followed by one mitotic division.
d. one mitotic division followed by one meiotic division.
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Students have asked these similar questions
Neurospora is used as genetic material because:
A.
it has short life cycle of 10 days
B.
the product of single meiosis can be easily analysed
C.
meiotic products are linearly arranged in the form of ordered tetrads
D.
is a diploid fungus
What is happening during this phase of meiosis?
A.)Mitosis is complete and 4 diploid daughter cells have been produced.
B.)Telophase II
C.)Meiosis II is complete and 4 haploid daughter cells have been produced.
D.)Meiosis I is complete and 4 diploid daughter cells have been produced
E.)Meiosis II is complete and 4 diploid daughter cells have been produced
Which structures shown above are typically haploid?
lect one:
A. Plant spores and animal zygotes
B. Plant spores and animal gametes
C. Plant zygotes and animal zygotes
D. Plant gametes and animal zygotes
Use the following information to answer the next question.
Life Cycle of a Typical Animal
Life Cycle of a Typical Plant
Male
Gametes
Female
Zygote
Male
Gametes
Female
Spores
Zygote
Chapter 6 Solutions
Genetics: Analysis and Principles
Ch. 6.1 - 1. Genetic linkage occurs because
a. genes that...Ch. 6.1 - In the experiment by Bateson and Punnett, which of...Ch. 6.2 - Prob. 1COMQCh. 6.2 - Prob. 2COMQCh. 6.2 - 3. For a chi square analysis involving genes that...Ch. 6.3 - Answer the multiple-choice questions based on the...Ch. 6.3 - Answer the multiple-choice questions based on the...Ch. 6.4 - 1. A tetrad of spores in an ascus is the product...Ch. 6.4 - Prob. 2COMQCh. 6.5 - 1. The process of mitotic recombination involves...
Ch. 6 - 1. What is the difference in meaning between the...Ch. 6 - 2. When a chi square analysis is applied to solve...Ch. 6 - 3. What is mitotic recombination? A heterozygous...Ch. 6 - 4. Mitotic recombination can occasionally produce...Ch. 6 - 5. A crossover has occurred in the bivalent shown...Ch. 6 - A crossover has occurred in the bivalent shown...Ch. 6 - A diploid organism has a total of 14 chromosomes...Ch. 6 - If you try to throw a basketball into a basket,...Ch. 6 - 9. By conducting testcrosses, researchers have...Ch. 6 - In humans, a rare dominant disorder known as...Ch. 6 - 11. When true-breeding mice with brown fur and...Ch. 6 - Though we often think of genes in terms of the...Ch. 6 - 13. If the likelihood of a single crossover in a...Ch. 6 - 14. In most two-factor crosses involving linked...Ch. 6 - Researchers have discovered that some regions of...Ch. 6 - 16. Describe the unique features of ascomycetes...Ch. 6 - Figure 6.1 shows the first experimental results...Ch. 6 - In the experiment of Figure 6.6, Stern followed...Ch. 6 - 3. Explain the rationale behind a testcross. Is it...Ch. 6 - 4. In your own words, explain why a testcross...Ch. 6 - Explain why the percentage of recombinant...Ch. 6 - 6. If two genes are more thanapart, how would you...Ch. 6 - 7. In Morgan’s three-factor crosses of Figure 6.3,...Ch. 6 - Two genes are located on the same chromosome and...Ch. 6 - 9. Two genes, designated A and B, are locatedfrom...Ch. 6 - 10. Two genes in tomatoes areapart; normal fruit...Ch. 6 - In the tomato, three genes are linked on the same...Ch. 6 - A trait in garden peas involves the curling of...Ch. 6 - Prob. 13EQCh. 6 - 14. In the garden pea, several different genes...Ch. 6 - A sex-influenced trait is dominant in males and...Ch. 6 - Three recessive traits in garden pea plants are as...Ch. 6 - In mice, a trait called snubnose is recessive to a...Ch. 6 - 18. In Drosophila, an allele causing vestigial...Ch. 6 - 19. Three autosomal genes are linked along the...Ch. 6 - 20. Let’s suppose that two different X-linked...Ch. 6 - Prob. 21EQCh. 6 - In mice, a dominant allele that causes a short...Ch. 6 - 2. In Chapter 3, we discussed the idea that the X...Ch. 6 - Mendel studied seven traits in pea plants, and the...
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- The haploid genome of Toxoplasma gondii has 14 chromosomes. When an oocyst changes into a sporozoite, its nucleus contains Select one: a. 7 chromosomes b. 42 chromosomes c. 28 chromosomes d. 14 chromosomesarrow_forwardShown below is a photomicrograph of Rhoeo tradescantia cell undergoing meiosis. Answer the following question for the photomicrograph: a. Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge) b. Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph) c. Explain how these aberrations are formed d. Will this result to sterile or fertile gametes? Explain.arrow_forwardCells that result from meiosis are: a. Diploid b. Haploid c. Zygotic d. Triploidarrow_forward
- A spider mite has 5 pairs of chromosomes, please draw what the indicated stage would look like and state how many individual chromosomal structures and DNA molecules will be present in each cell. a. After S phase is complete b. Metaphase of mitosis c. Prophase of meiosis II d. After cytokinesis of meiosis II e. Finally, explain why crossing over is only effective if it occurs between homologous chromosomes and not sister chromatids.arrow_forwardWhy is parthenogenesis in bees considered to be a form of asexual reproduction? Select one: a. The male drone is made from a haploid egg. Fertilization is not part of the process to make a male drone. b. The formation of the original haploid cell was achieved using binary fission. c. Although genetic material is transferred from one cell to another using conjugation, the resulting cells will be identical to each other. d. The haploid male bees were made through the process of meiosis, so they are identical to the parent egg cell.arrow_forwardWhich of the following is the primary difference between mitosis and meiosis? A. Meiosis occurs in somatic cells, whereas mitosis is only used to produce germ cells. B. Mitosis occurs in somatic cells, whereas meiosis is only used to produce germ cells. C. Meiosis always occurs much more quickly than mitosis. D. Only meiosis includes a separation division step, which occurs during Meiosis I.arrow_forward
- The given picture is a homologous chromosome pair that shows this behavior pachytene: a. what is the specific type of chromosomal aberrations shown in the figure? b. Draw how these chromosomes behave during Anaphase I. c. Provide all the gametes that will be formed after meiosis II and identify whether those gamete will be fertile or sterile.arrow_forwardWhich of the following mechanisms contributes to genetic variation through sexual reproduction via the random orientation of pairs of homologous chromosomes at metaphase of meiosis I? A. crossing over B. random fertilization C. independent assortment of chromosomes D. cytokinesisarrow_forwardThe number of chromosomes present in eurkaryotic cells a. is consistent during the life cycle b. is haploid among sexually reproducing forms and diploid if the reproduce sexually c. is double by fertilization and cut in half by meiosis d. is dependent on the age of the tissuearrow_forward
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