2. Consider genes that have 2 alleles each. Gene 1 has allele "E" and "e", where E is dominant to e. Gene 2 has alleles "F" and "f", where F is dominant to f. We do not know if the genes are linked. The cross EEFF x eeff is made, and the F. is then test-crossed with the recessive parent. Note the genotypes are written without slashes and semicolon because we do not know if the genes are on the same chromosomes or different. i. What is the genotype of the F1 individual used in the test cross? (Simply follow how the genes are written above.) ii. Below are the progeny of phenotypes and proportions from the F1 test-cross. What are the full progeny genotypes? (Simply follow how the genes are written above) Which progeny genotypes are the result of inheriting a Parental (P) or Recombinant (R) combination of alleles? (Simply put P for parental and R for recombinant; use capital letters) Phenotype EF Frequency 2/6 Cross-Over Type Genotype Ef 1/6 e F 1/6 ef 2/6 ii. Do the results above suggest the two genes are linked? Indicate whether the genes are unlinked (UN), completely linked (CL), or incompletely linked (IL)? Choose answer
2. Consider genes that have 2 alleles each. Gene 1 has allele "E" and "e", where E is dominant to e. Gene 2 has alleles "F" and "f", where F is dominant to f. We do not know if the genes are linked. The cross EEFF x eeff is made, and the F. is then test-crossed with the recessive parent. Note the genotypes are written without slashes and semicolon because we do not know if the genes are on the same chromosomes or different. i. What is the genotype of the F1 individual used in the test cross? (Simply follow how the genes are written above.) ii. Below are the progeny of phenotypes and proportions from the F1 test-cross. What are the full progeny genotypes? (Simply follow how the genes are written above) Which progeny genotypes are the result of inheriting a Parental (P) or Recombinant (R) combination of alleles? (Simply put P for parental and R for recombinant; use capital letters) Phenotype EF Frequency 2/6 Cross-Over Type Genotype Ef 1/6 e F 1/6 ef 2/6 ii. Do the results above suggest the two genes are linked? Indicate whether the genes are unlinked (UN), completely linked (CL), or incompletely linked (IL)? Choose answer
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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2.
Transcribed Image Text:2. Consider genes that have 2 alleles each. Gene 1 has allele "E" and "e", where E is dominant to
e. Gene 2 has alleles "F" and "f", where F is dominant to f. We do not know if the genes are
linked. The cross EEFF x eeff is made, and the F1 is then test-crossed with the recessive parent.
Note the genotypes are written without slashes and semicolon because we do not know if the
genes are on the same chromosomes or different.
i.
What is the genotype of the F1 individual used in the test cross? (Simply follow how the
genes are written above.)
ii.
Below are the progeny of phenotypes and proportions from the F1 test-cross. What are
the full progeny genotypes? (Simply follow how the genes are written above) Which
progeny genotypes are the result of inheriting a Parental (P) or Recombinant (R)
combination of alleles? (Simply put P for parental and R for recombinant; use capital
letters)
Phenotype
EF
Frequency
2/6
Cross-Over Type
Genotype
Ef
1/6
e F
1/6
ef
2/6
iii.
Do the results above suggest the two genes are linked? Indicate whether the genes are
unlinked (UN), completely linked (CL), or incompletely linked (IL)? Choose answer
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