A phenotypically normal woman is having a hard time getting pregnant. as her doctor, you run a karyo

a phenotypically normal woman is having a hard time getting pregnant. as her doctor, you run a karyotype and determine that sheis a carrier for a reciprocal translocation 4:20, while her husband's karyotype is normal

1. Explain her sub-fertility by drawing out all of her possible gametes

2. Now give chromosomal composition and phenotypes, with their expected frequencies, of all possible outcomes of conception from this couple( including lethal combinations)

3. why aren't they getting pregnant? Will they ever be able to have biological children?