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Expected phenotypes of offspring from a heterozygous male with attached earlobes

I am having trouble with this type of setup not sure about how to set up Punnett square to answer questions concerning homozygous vs heterozygous

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If we Denote that haing free earlobes is dominant to attached earlobes.
and having free earlobes is 'A' , having attached earlobes 'a'

the man-free earlobes-heterzygous(means he has one allele that is for free and one allele that is