Answer Yes if the child lived with you for the whole year.
When filing separately only one of you can claim the child as a dependent. The other parent does not enter the child on their tax return at all.
Note - There are many take-aways when filing separately versus jointly- https://ttlc.intuit.com/turbotax-support/en-us/help-article/taxation/better-married-couple-file-join...
When you file separately, your tax rate is higher and you won't be able to claim:
If you file separately and live in Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, or Wisconsin, you have to deal with community property allocations and adjustments, which adds extra work and complexity to your taxes.
