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:**Genetics Problem:**
For the following questions, provide your answer to each part in the space provided.
**L** is dominant over **l**. **L** = large, **l** = small.
**R** is incompletely dominant over **r**. **RR** = red, **Rr** = pink, **rr** = white.
**Parents:** LLRr × LlRr
- **Phenotype of Parent LLRr:** Large Pink
- **Phenotype of Parent LlRr:** Large Pink
**Punnett Square:**
| | LR | Lr | lR | lr |
|-------------|------------|------------|------------|------------|
| **LR** | LLRR (Large Red) | LLRr (Large Pink) | LlRR (Large Red) | LlRr (Large Pink) |
| **Lr** | LLRr (Large Pink) | LLrr (Large White)| LlRr (Large Pink)| Llrr (Large White)|
**Step 2**
b) The offspring of the parents' cross are:
Phenotype ratio: Large Red : Large Pink : Large White = 2 : 4 : 2
Transcribed Image Text:**Genotypes of the Offspring:**
This section would typically list the possible genetic combinations resulting from a genetic cross. It includes all the alleles each parent can pass on and outlines the potential genetic makeup of their offspring.
**Genotypic Ratio of the Offspring:**
Here, you would find the proportion of different genotypes among the offspring. This is often expressed in the format of a ratio and provides insight into how frequently each genotype appears.
**Phenotypes of the Offspring:**
This part describes the physical or observable traits of the offspring that result from the genotypes listed above. Phenotypes are determined by the interaction of genotypes with the environment.
**Phenotypic Ratio of the Offspring:**
In this section, the various observable traits are quantified in a ratio, similar to the genotypic ratio. This ratio helps in understanding the likelihood of each phenotype appearing in a population.
No graphs or diagrams are included in the image.
Expert Solution
Step 1
INTRODUCTION
The phenotypic and genotypic ratio of the cross between LLRr and LlRr is given below.
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