LAB 03 EXERCISE 08

pdf

School

East Los Angeles College *

*We aren’t endorsed by this school

Course

111

Subject

Biology

Date

Apr 3, 2024

Type

pdf

Pages

Uploaded by DrCrow10996

LAB 03 EXERCISE 08 Due No due date Points 3 Questions 3 Time Limit None Attempt History Attempt Time Score LATEST Attempt 1 2 minutes 3 out of 3 Score for this quiz: 3 out of 3 Submitted Feb 21 at 10:48am This attempt took 2 minutes. Question 1 1/1 pts (Q001) Mister Poppleton, a cat enthusiast who breeds cats and competes on the Cat Fancier's Association competitive show circuit, has just received quite a shock! His award-winning cat, Emeline, has given birth to some surprising kittens. Of her five kittens, four have black fur, and one has an unexpected coat of fur that is a patchwork of black and orange, known as a tortoiseshell pattern. Mister Poppleton was breeding Emeline with an award-winning male cat, named Barnaby, but he is now worried that Emeline may have been having secret sexual relations with a neighborhood stray cat, named Hugo. Mister Poppleton consults with his veterinarian, Dr. Doolittle, for some expert advice. Dr. Doolittle explains: In cats, there are several genes that determine fur color. One of those genes is found on the X chromosome and codes for whether a cat has orange fur or black fur. Because it is a sex- linked gene, it is expressed a bit differently in males than in females. In males: » If a male cat has the orange allele on his X chromosome, he will have orange fur. * [f a male cat has the black allele on his X chromosome, he will have black fur. In females: » If a female cat has the orange allele on both of her X chromosomes, she will have orange fur. * [f a female cat has the black allele on both of her X chromosomes, she will have black fur. - If a female cat has the orange allele on one of her X chromosomes and the black allele on the other X chromosome, she will have a tortoiseshell coat.

With this information in mind, Mister Poppleton takes a closer look at Emeline and the possible fathers (Barnaby and Hugo) of her kittens. Emeline is a female cat with all-black fur. Barnaby is a male cat with all-black fur. Hugo is a male cat with all-orange fur. Who is the father of these kittens? (Note: All of the kittens have the same father.) Barnaby Correct! Hugo FEEDBACK: The only way for Emeline to have a kitten with a tortoiseshell coat is if the father contributed an orange allele. Question 2 Not yet graded / 1 pts (Q002) How do you know this? Be sure to provide evidence from the scenario and from what you know about patterns of inheritance. Your Answer: Hugo's father must have orange fur because that's the only way a cat can have both an orange and a black X chromosome. Since the mother has black fur, the father must also have orange fur. Question 3 Not yet graded / 1 pts (Q003) Why does only one kitten have the unusual tortoiseshell coat? Be sure to provide evidence from the scenario and what you know about patterns of inheritance. Your Answer: The tortoiseshell coat is unique to one kitten, and she is the only one who is female. Given that their mothers give all kittens the gene for black fur. Since only the black fur chromosome is expressed in male cats, those who have no fur characteristic in their father will naturally be black. Since only females may have tortoiseshell coats, the tortoiseshell-coated cat is a girl. She inherited her mother's one black fur allele from her mother, and since she is not a male, she also inherited her father's single X chromosome, which carries the orange fur allele. She will have the tortoiseshell coat since she has an orange and black X on it. Quiz Score: 3 outof 3 This quiz score has been manually adjusted by +2.0 points.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

LAB 03 CRITICAL THINKING.pdf

LAB 03 EXERCISE 04.pdf

LAB 04 CONCEPT REVIEW QUESTIONS.pdf

LAB 05 EXERCISE 05.pdf

Effects of Sunscreen and tanning lotion on yeast cells exposed to UV light.docx

LAB 04 EXERCISE 01.pdf

Calculating Correlation Coefficients and Creating Lines of Best Fit.docx

virtual lab week 3.docx

BIOL201_EXAM1_2.png

BIOL201_EXAM1_5.png

BIO 214-MRSA Case Study modified (1).docx

Human-Microbe Interactions.docx

Recommended textbooks for you

Comprehensive Medical Terminology

Nursing

ISBN:9781133478850

Author:Jones

Publisher:Cengage

Essentials Health Info Management Principles/Prac...

Health & Nutrition

ISBN:9780357191651

Author:Bowie

Publisher:Cengage

Lifetime Physical Fitness & Wellness

Health & Nutrition

ISBN:9781337677509

Author:HOEGER

Publisher:Cengage

SEE MORE TEXTBOOKS

Recommended textbooks for you

Comprehensive Medical Terminology
Nursing
ISBN:9781133478850
Author:Jones
Publisher:Cengage
Essentials Health Info Management Principles/Prac...
Health & Nutrition
ISBN:9780357191651
Author:Bowie
Publisher:Cengage
Lifetime Physical Fitness & Wellness
Health & Nutrition
ISBN:9781337677509
Author:HOEGER
Publisher:Cengage