Answered

Experience the convenience of getting your questions answered at IDNLearn.com. Discover reliable and timely information on any topic from our network of knowledgeable professionals.

Based on the monohybrid cross, which of the following are the parents?

\begin{tabular}{|c|c|}
\hline
A. Dd & dd \\
\hline
B. DD & Dd \\
\hline
C. Dd & DD \\
\hline
D. dd & Dd \\
\hline
\end{tabular}

Sagot :

GinnyAnsweridn
Let's analyze the problem of identifying the parents based on a monohybrid cross using classical Mendelian genetics.

### Understanding Monohybrid Cross
In a monohybrid cross, we examine the inheritance of a single pair of contrasting traits. Typically, we use the notation:
- "D" for the dominant allele
- "d" for the recessive allele

### Given Tabular Phenotypes
```
| Dd | dd |
|----|----|
| DD | Dd |
```
This table presents the offspring phenotypes, which arise from crossing certain parent genotypes. We need to determine which parent genotypes most likely produce these offspring phenotypes.

### Possible Parent Pairs:
1. Dd and DD: A parent with genotype "Dd" crossed with a parent with genotype “DD”.
2. Dd and Dd: Both parents have the genotype "Dd".
3. DD and dd: One parent has genotype "DD", and the other "dd".
4. dd and Dd: One parent has genotype "dd", and the other "Dd".

### Analysis of Possible Parent Pairs

#### 1. Dd and DD:
- Possible offspring genotypes: DD, Dd
- This does not fit completely with the given table that also includes "dd".

#### 2. Dd and Dd:
- Possible offspring genotypes: DD, Dd, dd
- The genotype combinations are:
- D from first parent + D from second parent = DD
- D from first parent + d from second parent = Dd
- d from first parent + D from second parent = Dd
- d from first parent + d from second parent = dd
- Fits perfectly with given outcomes.

#### 3. DD and dd:
- Possible offspring genotypes: Dd (only)
- This does not fit with the given table that requires offspring of types DD, Dd, and dd.

#### 4. dd and Dd:
- Possible offspring genotypes: Dd, dd
- This does not fit completely with the given table as it lacks "DD".

### Conclusion
Considering the possible genotypes and the given table, the most probable and fitting parent pair is:

Dd and Dd

This pair explains all the offspring phenotypes (DD, Dd, dd) as per the classical Mendelian genetics rules.

Therefore, the parents are Dd and Dd.
Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. For trustworthy answers, visit IDNLearn.com. Thank you for your visit, and see you next time for more reliable solutions.