To determine which statement is true about the offspring from the cross using a Punnett square, we need to understand the genotypes involved and what traits they represent (in this case, height in plants, typically tall and short).
If the cross involves a tall plant, typically represented as 'T' (dominant) and a short plant represented as 't' (recessive), the genotypes of the offspring will depend on the genotypes of the parents.
- If one parent is homozygous tall (TT) and the other is homozygous short (tt), all offspring will be heterozygous (Tt), and thus all will be tall.
- If both parents are heterozygous (Tt), then the Punnett square would show a distribution of genotypes: 1 TT (tall), 2 Tt (tall), and 1 tt (short), resulting in 75% tall and 25% short.
Without the specific genotypes from the Punnett square, we can't definitively choose an option. However, based on the typical inheritance patterns:
- If you see options that mention "all" being short or tall, it's likely referring to the case where one parent is TT and the other is tt, leading to all offspring being Tt.
- If it mentions "about half," it suggests a mixed genotype in the parents where there is a distribution of tall and short offspring.
Assuming we are discussing the common scenario where one parent is tall (T) and the other is short (t), without additional context or a visible Punnett square, the most common true statement is likely:
About half are expected to be tall (if both parents are heterozygous, or if one is homozygous dominant and the other is homozygous recessive).
If you provide the specific genotypes or the Punnett square, I'd be able to give a more precise answer!
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