Question

1. a tall plant (tt) is crossed with a short plant (tt).

genotypes =
phenotypes =

1. a red flower (rr) is crossed with a white flower (rr).

genotypes =
phenotypes =
punnett square problems
complete the following problems. list the parent genotypes, draw and fill in a punnett square, and then list the offspring genotypes and phenotypes.

1. a homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).

genotypes =
phenotypes =

Explanation:

---

Problem 3: Tall (Tt) × Short (tt) Plant

Step1: Set up Punnett square

Parent alleles: Tt gives $T, t$; tt gives $t, t$

$$\begin{array}{c|cc} & T & t \\ \hline t & Tt & tt \\ t & Tt & tt \\ \end{array}$$

Step2: Identify offspring genotypes

Count unique genotypes and ratios

Step3: Identify offspring phenotypes

T (tall) is dominant over t (short)
---

Problem 4: Red (Rr) × White (rr) Flower

Step1: Set up Punnett square

Parent alleles: Rr gives $R, r$; rr gives $r, r$

$$\begin{array}{c|cc} & R & r \\ \hline r & Rr & rr \\ r & Rr & rr \\ \end{array}$$

Step2: Identify offspring genotypes

Count unique genotypes and ratios

Step3: Identify offspring phenotypes

R (red) is dominant over r (white)
---

Problem 1: Homozygous Brown (BB) × Heterozygous Brown (Bb) Mouse

Step1: Analyze given Punnett square

$$\begin{array}{c|cc} & B & B \\ \hline B & BB & BB \\ b & Bb & Bb \\ \end{array}$$

Step2: Identify offspring genotypes

Count unique genotypes and ratios

Step3: Identify offspring phenotypes

B (brown) is dominant over b (tan)

Answer:

---

Problem 3

Punnett Square:

$$\begin{array}{c|cc} & T & t \\ \hline t & Tt & tt \\ t & Tt & tt \\ \end{array}$$

Genotypes = Tt (50%), tt (50%)
Phenotypes = Tall (50%), Short (50%)

---

Problem 4

Punnett Square:

$$\begin{array}{c|cc} & R & r \\ \hline r & Rr & rr \\ r & Rr & rr \\ \end{array}$$

Genotypes = Rr (50%), rr (50%)
Phenotypes = Red (50%), White (50%)

---

Problem 1

Genotypes = BB (50%), Bb (50%)
Phenotypes = Brown (100%)