11. Tortoiseshell cats have different alleles for fur colors on their X chromosomes, with different X chromosomes being activated in different cells, a phenomenon called O A. X-inactivation. O B. X-expression. O C. X-activation. O D. Y-inactivation.

11. Tortoiseshell cats have different alleles for fur colors on their X chromosomes, with different X chromosomes being activated in different cells, a phenomenon called O A. X-inactivation. O B. X-expression. O C. X-activation. O D. Y-inactivation.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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21. If the original sequence of chromosome is L M NO P Q R S and two chromosome mutation occurs, resulting in sequence of L N MOPR S, what type of mutation is it? A. Two translocation B. Two inversion C. Two deletion D. One inversion and one deletion 22. In humans, free ear lobe is dominant to attached ear lobe while curly hair is dominant to straight hair. If husband and wife are double heterozygous, what is the chance of their children having free ear lobes and straight hair? A. 1/16 В. 2/16 С. 3/16 D. 9/16 Page 8 of 23 Cell Biology BIO30305 Dr. Ng Woei Kean 202104 FE 23. The followings are chemical factors that cause mutation EXCEPT A. base analog B. acid reagent C. acridine derivative D. deaminating agent
1. a cancer causing virus causes --- in susceptible cultured cells. a. foci b. plaques 2. Lack of associated GTPase activity will result in ---- of Ras protein. a. inactivation b. deletion c. constitutive activation d. no difference in activity
If X inactivation in humans shuts down extra X chromosomes, why do XXY and XXX individuals display abnormal phenotypes? Group of answer choices Some X linked genes escape inactivation In trisomies, all the X chromosomes are shut down X inactivation can only shut down one X per cell The extra Barr body (condensed X) takes up physical space in the cell
In a female human cell, what would be the effect on X inactivation if SİRNAS that eliminate the products of the Tsix gene are added? Select one: a. One of the two X chromosomes would become inactivated. b. Both of the X chromosomes would become inactivated. c. Neither of the X chromosomes would become inactivated. d. Only the maternal X chromosome would become inactivated. e. Only the paternal X chromosome would become inactivated.
1. Does the epigenome change? What can effect changes to the epigenome?2. Can epigenetics end the nature vs. nurture debate? Why or why not?3. Can we manipulate epigenetic marks? Expound on your answer.
1. The research done by Gregor Mendel is important because it showed a. physical traits in bacteria are determined by chromosomes. b. chromosomes in pea plants separate during cell division. c. DNA is present in bacteria. d. physical traits in pea plants are passed between generations. 2. Transcription of the lacZ and lacy genes of the lac operon begins when a. the repressor is released from the promoter b. the repressor protein binds to the inducer c. RNA polymerase binds to the lacZ gene d. lactose binds to the operator 3. During DNA replication, the function of RNA primers is to: a. serve as a binding site for DNA ligase b. serve as starting points for DNA strand elongation by DNA polymerase III in prokaryotes c. serve as starting points for DNA strand elongation by DNA polymerase I in the 3' - 5' direction d. open replication bubbles 4. Which statement about purines is true? a. Each purine is base pair with a pyrmidine. b. They are adenine and guanine. c. They are nitrogenous bases…
2. Timber Rattler snakes do not lay eggs, but rather give birth to live young. Males have two ZZ chromosomes and females are ZW. Buttercup is a Timber Rattler that has been kept in a cage in an accredited zoo for 15 years. She has never had any encounters with other snakes and the zoo staff had never planned to breed her. But one day the staff look into her cage and find a baby male rattler! The baby is related to Buttercup but is not her clone. Draw out two ways meiosis of Buttercups’ sex chromosomes could be altered to produce the baby without any contribution from a male.
8. LL gnus have a long lifespan, so they become old gnus. 1l gives normal lifespan. The NN gnus watch the news. nn gnus play videogames instead. Finally, BB gnus drink booze. bb gnus drink water. But all you have to do here is map the genes: a) right order, and include any relevant distances between any linked genes. Draw a map showing which genes are on which chromosomes, in the Phenotype n1 b Number 404 NL B 422 b) what it tells you. What is the formula for the coefficient of coincidence? Or, describe n L B 18 N1b 16 с) Calculate the coefficient of coincidence. n L b 75 N1B 59 n1 B NL b 4 2 Total 1000
In one cell, gene C is expressed, whereas in another cell, geneC is inactive. After the cells are fused experimentally, both copiesof gene C are expressed. This observation could be explained bya. a cis-epigenetic mechanism.b. a trans-epigenetic mechanism.c. DNA methylation.d. both a and b.