SIGNED Please answer the following problem & EXPLAIN your answer showing ALL WORKING. Use additional sheets as necessary. Two true-breeding varieties of maize, one 1I cm high and the other 47 cm high were 1) crossed and the resultant F, hybrids were then crossed to generate the F2. In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants of 11 cm high. a) How many i) genes and ii) how many alleles are involved in determining height in this plant? b) What is the contribution of each dominant allele to the phenotype in cm? c) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm plant and a true-breeding 47 cm plant? d) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of each extreme phenotype? e) In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest number of different phenotypes? specify the phenotypes observed.
SIGNED Please answer the following problem & EXPLAIN your answer showing ALL WORKING. Use additional sheets as necessary. Two true-breeding varieties of maize, one 1I cm high and the other 47 cm high were 1) crossed and the resultant F, hybrids were then crossed to generate the F2. In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants of 11 cm high. a) How many i) genes and ii) how many alleles are involved in determining height in this plant? b) What is the contribution of each dominant allele to the phenotype in cm? c) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm plant and a true-breeding 47 cm plant? d) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of each extreme phenotype? e) In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest number of different phenotypes? specify the phenotypes observed.
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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Please solve the part B question, thank you so much!
Transcribed Image Text:SIGNED
Please answer the following problem & EXPLAIN your answer showing ALL WORKING.
Use additional sheets as necessary.
Two true-breeding varieties of maize, one 1I cm high and the other 47 cm high were
1)
crossed and the resultant F, hybrids were then crossed to generate the F2. In the F2 there were a
total of 13,923 plants with a continuous variation in heights between the two extremes and with
only 3 plants as large as 47 cm high and 5 plants of 11 cm high.
a) How many i) genes and ii) how many alleles are involved in determining height in this plant?
b) What is the contribution of each dominant allele to the phenotype in cm?
c) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm
plant and a true-breeding 47 cm plant?
d) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of
each extreme phenotype?
e) In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the
smallest number of different phenotypes? specify the phenotypes observed.
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