What is the number for the degrees of freedom

Two autosomal genes control horn color in dragons. Pure-breeding gold-horned dragons were mated to pure-breeding silver-horned dragons. All of the F1 were gold. The F1 were intermated and the F2 generation consisted of 147 gold, 16 silver and 100 bronze.

A) what’s the genetically based phenotypic ratio that should be hypothesized to explain the F2 data.

B) In the chi-square test, what is the expected number of gold-horned dragons? Round to two decimal places.

C) In the chi-square test, what is the expected number of silver-horned dragons? Round to two decimal places.

D) In the chi-square test, what is the expected number of bronze-horned dragons? Round to two decimal places.

C) In the chi-square test, what is the chi-square value? Round to three decimal places.

E) What is the number for the degrees of freedom?

F) What is the critical value? Round to two decimal places.

G) What is your conclusion from the chi-square test, regect H0 or fail to regect H0?