trait such as tt is said to be heterozygous
rr
rr
rt
pp
pp
tt
tt
homozygous
heterozygous

Question

Accepted Answer

To solve this, we first recall the definitions:
- **Homozygous**: Genotype with identical alleles (e.g., $ RR $, $ rr $, $ PP $, $ TT $).
- **Heterozygous**: Genotype with different alleles (e.g., $ Tt $, $ Rr $ – though $ rT $ here is also heterozygous as alleles differ).

### Step 1: Classify $ RR $
$ RR $ has two identical dominant alleles. So it is **Homozygous**.

### Step 2: Classify $ rr $
$ rr $ has two identical recessive alleles. So it is **Homozygous**.

### Step 3: Classify $ rT $
$ rT $ has two different alleles ($ r $ and $ T $). So it is **Heterozygous**.

### Step 4: Classify $ pp $
$ pp $ has two identical recessive alleles. So it is **Homozygous**.

### Step 5: Classify $ PP $
$ PP $ has two identical dominant alleles. So it is **Homozygous**.

### Step 6: Classify $ Tt $
$ Tt $ has two different alleles ($ T $ and $ t $). So it is **Heterozygous**.

### Step 7: Classify $ TT $
$ TT $ has two identical dominant alleles. So it is **Homozygous**.

### Final Classification Table:
| Genotype | Classification       |
|----------|----------------------|
| $ RR $ | Homozygous           |
| $ rr $ | Homozygous           |
| $ rT $ | Heterozygous         |
| $ pp $ | Homozygous           |
| $ PP $ | Homozygous           |
| $ Tt $ | Heterozygous         |
| $ TT $ | Homozygous           |

(If the task was to sort into the two columns labeled "Homozygous" and "Heterozygous" in the image, the above table shows the grouping.)

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QUESTION IMAGE

Question

Explanation:

Step 1: Classify \( RR \)

Step 2: Classify \( rr \)

Step 3: Classify \( rT \)

Step 4: Classify \( pp \)

Step 5: Classify \( PP \)

Step 6: Classify \( Tt \)

Step 7: Classify \( TT \)

Final Classification Table:

Answer: