3. Predict the phenotypic and genotypic ratios for crossing the following pea plants: A a. short x short b. short x true-breeding tall c. true-breeding tall x true-breeding tall Wh
3. Predict the phenotypic and genotypic ratios for crossing the following pea plants: A a. short x short b. short x true-breeding tall c. true-breeding tall x true-breeding tall Wh
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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Transcribed Image Text:### Genetic Cross of Pea Plants
**Problem 3: Predict the phenotypic and genotypic ratios for crossing the following pea plants:**
a. short × short
b. short × true-breeding tall
c. true-breeding tall × true-breeding tall
---
This exercise requires analyzing pea plant height based on Mendelian genetics. Each scenario, or "cross," involves determining both the phenotypic (observable traits) and genotypic (genetic makeup) outcomes of the offspring.
- **Short × Short:** Both parents display the recessive short trait.
- **Short × True-Breeding Tall:** One parent is recessive short, the other is homozygous dominant tall.
- **True-Breeding Tall × True-Breeding Tall:** Both parents are homozygous dominant for the tall trait.
Students should use Punnett squares to visualize the genetic crosses and calculate expected ratios for each scenario.
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