Part B. You cross a true breeding gold fish having long curly tail (P3) with a true breeding gold fish having short and straight tail (P4). All of the resulting F1 fish have long straight tails. a) Write the genotype of the parental fish (P3 and P4) using the outlined nomenclature. Genotype of P3: Genotype of P4: b) You test cross an F1 fish (with genotype BbCc) and obtain 1000 offsprings in F2 generation with the following results: 474 Bbcc, 480 bbCc, 20 BbCc and 26 bbcc. 1. Create and fill in a Punnet square for this cross. 2. What type of cross is it? 3. Are these loci linked?
Part B. You cross a true breeding gold fish having long curly tail (P3) with a true breeding gold fish having short and straight tail (P4). All of the resulting F1 fish have long straight tails. a) Write the genotype of the parental fish (P3 and P4) using the outlined nomenclature. Genotype of P3: Genotype of P4: b) You test cross an F1 fish (with genotype BbCc) and obtain 1000 offsprings in F2 generation with the following results: 474 Bbcc, 480 bbCc, 20 BbCc and 26 bbcc. 1. Create and fill in a Punnet square for this cross. 2. What type of cross is it? 3. Are these loci linked?
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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hello could you please answer these questions and explain to me the reasons of the answers
Transcribed Image Text:You are studying three traits in a goldfish variety; body colour (A or a), tail length (B or b) and shape (C or c).
Note: Use the uppercase letters for the alleles associated with the dominant phenotypes and
the lowercase letters for the alleles associated with the recessive phenotypes. Assume that
each of these traits is regulated by one gene.
Photo credit https://www.petmd.com
Transcribed Image Text:Part B. You cross a true breeding gold fish having long curly tail (P3) with a true breeding gold fish having short and
straight tail (P4). All of the resulting F1 fish have long straight tails.
a) Write the genotype of the parental fish (P3 and P4) using the outlined nomenclature.
Genotype of P3:
Genotype of P4:
b) You test cross an F1 fish (with genotype BbCc) and obtain 1000 offsprings in F2 generation with the
following results: 474 Bbcc, 480 bbcs, 20 BbCs and 26 bbcc.
1. Create and fill in a Punnet square for this cross.
2. What type of cross is it?
3. Are these loci linked?
4. What are the two parental classes and the two recombinant classes of offspring?
5. What is the percentage of recombination between these two loci? Show your calculations.
6. How many map units apart are they?
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