Question

A plant species has two alleles for height. Tall (T) and short (t). Tall height is dominant. If one plant is homozygous recessive and another is homozygous dominant. What would we be the genotype and phenotype for the offspring?
Responses

Tt, short
Tt, short

TT, tall
TT, tall

Tt, tall
Tt, tall

tt, short

Answer 1

To determine the genotype and phenotype of the offspring when one plant is homozygous recessive (tt) and the other is homozygous dominant (TT), we can use a Punnett square:

- Parent 1 (homozygous dominant): TT
- Parent 2 (homozygous recessive): tt

The possible combinations of alleles for the offspring would be:

```
T | T
----------------
t | Tt | Tt
----------------
t | Tt | Tt
```

All offspring will have the genotype Tt, which is heterozygous.

Since the tall allele (T) is dominant over the short allele (t), all offspring will display the dominant phenotype.

So, the genotype of the offspring is **Tt**, and the phenotype is **tall**.

The correct response is: **Tt, tall.**