Question

complex inheritance
cross a plant that is short and green seeded with a plant that is homozygous tall and homozygous yellow seeded. (note: tall plants are dominant to short plants and yellow seeded plants are dominant to green seeded plants.)
what is the phenotypic ratio?

Explanation:

Step1: Define allele symbols

Let $T$ = tall (dominant), $t$ = short (recessive); $Y$ = yellow seeds (dominant), $y$ = green seeds (recessive)

Step2: Identify parent genotypes

Short green parent: $ttyy$ (homozygous recessive for both traits)
Homozygous tall yellow parent: $TTYY$

Step3: Determine parent gametes

$ttyy$ produces only $ty$ gametes
$TTYY$ produces only $TY$ gametes

Step4: Perform cross (F1 generation)

All offspring inherit $TtYy$ from the cross $ty \times TY$

Step5: Analyze F1 phenotype

$Tt$ = tall (dominant), $Yy$ = yellow seeds (dominant). All F1 offspring have the same phenotype.

Answer:

100% tall and yellow-seeded (phenotypic ratio: 1 tall yellow : 0 tall green : 0 short yellow : 0 short green)