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Problem

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question

Height in a certain plant species is controlled by two pairs of independentlyassorting alleles, with each participating allele A or B adding 5 cm to a base height of 5 cm.A cross is madebetween parents with genotype AABB andaabb. Disregarding environmental influences, (a) What are the heights of each parent? (b) What is the expected height of the members of theF_1 generation? (c) What are the expected phenotypic ratios in theF_2 generation?

category

biology

options

  1. Height of AABB = 25 cm, height of aabb = 5 cm, height of AaBb = 10 cm, phenotypic ratios in the F2 generation are 25cm:15cm:10cm:5cm = 3:3:1:3
  2. Height of AABB = 20 cm, height of aabb = 5 cm, height of AaBb = 17.5 cm, phenotypic ratios in the F2 generation are 20cm:17.5cm:15cm:10cm:5cm = 1:2:4:2:1
  3. Height of AABB = 25 cm, height of aabb = 10 cm, height of AaBb = 17.5 cm, phenotypic ratios in the F2 generation are 25cm:17.5cm:10cm:5cm = 1:1:1:1
  4. Height of AABB = 25 cm, height of aabb = 5 cm, height of AaBb = 15 cm, phenotypic ratios in the F2 generation are 25cm:20cm:15cm:10cm:5cm = 1:4:6:4:1
  5. Height of AABB = 15 cm, height of aabb = 5 cm, height of AaBb = 10 cm, phenotypic ratios in the F2 generation are 15cm:10cm:5cm = 1:2:1
  6. Height of AABB = 20 cm, height of aabb = 10 cm, height of AaBb = 15 cm, phenotypic ratios in the F2 generation are 20cm:15cm:10cm:5cm = 1:4:3:2
  7. Height of AABB = 25 cm, height of aabb = 10 cm, height of AaBb = 20 cm, phenotypic ratios in the F2 generation are 25cm:20cm:15cm:10cm:5cm = 1:2:2:1
  8. Height of AABB = 30 cm, height of aabb = 5 cm, height of AaBb = 20 cm, phenotypic ratios in the F2 generation are 30cm:20cm:15cm:10cm:5cm = 1:3:3:2:1
  9. Height of AABB = 25 cm, height of aabb = 5 cm, height of AaBb = 20 cm, phenotypic ratios in the F2 generation are 25cm:20cm:15cm:10cm = 1:2:1:2
  10. Height of AABB = 20 cm, height of aabb = 5 cm, height of AaBb = 12.5 cm, phenotypic ratios in the F2 generation are 20cm:15cm:12.5cm:10cm:5cm = 1:1:1:1:1

src

stemez-Genetics

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Source and history

upstream_id / Original problem ID
3466
task_id
0c41fab5-21c9-5c06-ab26-a014e003aa0e
task_key
default--test--3466
task_revision_id
1
config / split
default / test

Official source

initial import