Answered

\begin{tabular}{|c|c|c|}
\hline
[tex]$r$[/tex] & [tex]$R r$[/tex] & [tex]$R r$[/tex] \\
\hline
[tex]$r$[/tex] & [tex]$R r$[/tex] & [tex]$R r$[/tex] \\
\hline
\end{tabular}

Key:
- [tex]$R$[/tex]: Smooth seeds
- [tex]$r$[/tex]: Wrinkled seeds

Which statement is true about the F1 generation?
A. The F1 generation will be homozygous.
B. The entire F1 generation will be hybrid.
C. The entire generation will have smooth seeds.
D. The entire generation will have wrinkled seeds.
E. [tex]$50\%$[/tex] of the generation will have wrinkled seeds.



Answer :

GinnyAnswer
Certainly! To analyze this problem, let's break it down step by step considering the principles of Mendelian genetics and the resulting phenotype ratios.

1. Parental Generation: Your original parental generation consists of:
- Two types: R (smooth seeds) and r (wrinkled seeds).

2. Creating F1 Generation:
- When you cross homozygous dominant (RR) with homozygous recessive (rr), all the offspring in the F1 generation will be heterozygous (Rr).
- Thus, the genetic makeup of the F1 generation is:
- 100% heterozygous Rr.

3. Phenotypic Expression in F1 Generation:
- Since R (smooth seeds) is dominant over r (wrinkled seeds), all heterozygous Rr individuals will express the dominant phenotype.
- Therefore, the entire F1 generation will have smooth seeds.

Summarizing the results:
- The entire F1 generation will be heterozygous (Rr).
- The entire F1 generation will have the smooth seeds phenotype.

Therefore, the correct statements among those given are:
- The entire F1 generation will be hybrid (heterozygous).
- The entire generation will have smooth seeds.

Other Questions