Hi! This is for my Biology I course can you please help?

Question

Hi! This is for my Biology I course, can you please help?

Coin
You’ve been working with two pairs of contrasting traits of a given organism . A ( which is
dominant over a ) , and B ( which is dominant over 6 ) . You crossed true breeding AA BB
individuals with aabb individuals to generate FI progeny , and then did a test cross between an FI
male and an aabb female , which yielded the following offspring
Phenotype
Number
AB
621
Ab
87
al
al
610
la . ( 1 pt . ) Are the A and Block linked or independent ?
1b . ( 2 pts . ) If linked . what is the percentage of recombination that has occurred between them ?
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Science