Question

study the punnett square to help you to choose the words to finish the sentences.
punnett squares
in a choose cross of choose pea plants with round (r) yellow (y) seeds, there will be a ratio of 9 choose , 3 choose , 3 choose , and 1 choose .
choose
monohybrid
dihybrid

Explanation:

Step1: Identify Cross Type

The Punnett square involves two traits (round/yellow seeds, so seed shape and color), indicating a dihybrid cross (monohybrid is one trait). So the first "Choose" for cross type: dihybrid.

Step2: Analyze Ratio

A dihybrid cross of heterozygotes (RrYy × RrYy) gives a phenotypic ratio of 9:3:3:1 (9 dominant - dominant, 3 dominant - recessive, 3 recessive - dominant, 1 recessive - recessive). So the ratio parts: 9 (R_Y_), 3 (R_yy), 3 (rrY_), 1 (rryy). So the blanks after 9 would be 3, 3, and 1 for the respective phenotypes.

Step3: Confirm Traits

The traits are seed shape (R/r) and seed color (Y/y), so two traits, dihybrid cross. The ratio components match 9:3:3:1 for dihybrid.

Answer:

1. cross type: dihybrid
2. ratio parts: 9 (round yellow), 3 (round green), 3 (wrinkled yellow), 1 (wrinkled green) (or corresponding genotypic/phenotypic labels based on the problem's context, but the key is dihybrid cross with 9:3:3:1 ratio).

(Note: Since the exact blanks' labels aren't fully clear from the image, but based on dihybrid cross knowledge, the cross is dihybrid, ratio is 9:3:3:1 for two traits.)