Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Textbook Question
Chapter 10, Problem 14SQ
Which of the following statements is incorrect?
- a. Some gene expression patterns can be passed to an individual's offspring.
- b. Expression of a master regulator triggers a gene express.ion cascade.
- c. X chromosome inactivation is necessary for normal development of male mammals.
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Which statement about Hox genes is false?
a.
They are expressed in similar patterns in the embryos of both mice and flies.
b.
They include a conserved region of base pairs called the homeobox.
c.
They are arranged in similar clusters of genes in both mice and flies.
d.
They are part of the so-called genetic toolkit.
e.
Because of their important functional roles, they evolved rapidly in both mammals and flies.
According to the Lyon hypothesis,a. one of the X chromosomes is converted to a Barr body insomatic cells of female mammals.b. one of the X chromosomes is converted to a Barr body in allcells of female mammals.c. both of the X chromosomes are converted to Barr bodies insomatic cells of female mammals.d. both of the X chromosomes are converted to Barr bodies inall cells of female mammals.
The toolkit genes generally regulate_____ [A]_____ in order to direct development. Other developmental decisions are regulated _____[B]_____, as we saw in sex determination in flies. *Hint: these are steps in the Central Dogma?
Give typing answer with explanation and conclusion
Chapter 10 Solutions
Biology: The Unity and Diversity of Life
Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Gene expression does not vary by ___ . a. cell...Ch. 10 - Binding or ___ to ___ in DNA can increase the rate...Ch. 10 - Muscle cells differ from bone cells because they...Ch. 10 - Prob. 4SQCh. 10 - Mechanisms that govern gene expression do not...Ch. 10 - Prob. 6SQCh. 10 - Prob. 7SQ
Ch. 10 - Prob. 8SQCh. 10 - Which of the following includes all of the others?...Ch. 10 - Prob. 10SQCh. 10 - Prob. 11SQCh. 10 - A cell with a Barr body is ___ . a. a bacterium b....Ch. 10 - Prob. 13SQCh. 10 - Which of the following statements is incorrect? a....Ch. 10 - Prob. 15SQCh. 10 - Explain why somebut not allof an organism's genes...Ch. 10 - Do the same mechanisms that govern gene expression...Ch. 10 - Prob. 3CTCh. 10 - The photos below show flowers from two Arabidopsis...
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- Absence of bicoid mRNA from a Drosophila egg leads to theabsence of anterior larval body parts and mirror-imageduplication of posterior parts. This is evidence that the productof the bicoid gene(A) normally leads to formation of head structures.(B) normally leads to formation of tail structures.(C) is transcribed in the early embryo.(D) is a protein present in all head structures.arrow_forwardif you replaced the hox genes that are normally expressed in a dolphin fin with the hox genes that are normally expressed in a cat's paw, you would get a dolphin with kitty cat paws. ( True or false)arrow_forwardSome uninformed people might argue that studying the development of an obscure little fish like the threespine stickleback is a waste of time and money. Why would biologists study the genes that control development in stickleback fish? Give some reasonsarrow_forward
- What piece of a transcript is utilized to localize the mRNA and why is this critical to development? a. 3'UTR; protein gradients have a large influence on gene expression of cells b. 5'UTR; protein gradients have a large influence on gene expression in cells c. the promoter; it has a large influence on protein production within a cell d. The TATA box; it has a large influence on protein production within a cellarrow_forwardHomeobox genes (a) are found in fruit flies but no other animals (b) tend to be expressed in the order that they appear on a chromosome (c) contain a characteristic DNA sequence (d) b and c (e) a, b, and carrow_forwardThere is a gene in the fruit fly (Drosophila) called antennepedia. It controls the formation of which structures? What happens when it isarrow_forward
- Which of the following is NOT true regarding Hox genes. A) The sequence they appear in their corresponding chromosomes is the same order of their expression along the front to back of the developing animal. B) Homologues of the same Hox genes found in flies can be found in humans. C) Hox genes are only found in animals with bilateral symmetry. D) Animals with more complex body plans tend to have more sets of Hox genes through gene duplication events.arrow_forwardIf a mutation in a homeotic gene produced the following phenotypes, would you expect it to be a loss-of-function or a gain-offunction mutation? Explain your answer. A. An abdominal segment has antennae attached to it. B. The most anterior abdominal segment resembles the most posterior thoracic segment. C. The most anterior thoracic segment resembles the most posterior abdominal segment.arrow_forwardIn flies, the gap gene kruppel is expressed in a broad band in the middle of the embryo with giant expressed as its anterior border and knirps at its posterior border. How is the expression of kruppel limited to this band in the embryo? Describe the spatial regulation of the kruppel gene.arrow_forward
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