New genetic combinations occur in sex cells during meiosis that can be passed on to offspring

Answer 1

This is correct. Meiosis is unique in that homologous chromosomes are present and line up during prophase I. When lined up, the homologous chromosomes can undergo what is called "crossing over". This allows the chromosomes to swap information. This can create unique combinations in offspring and leads to genetic diversity. It is important to note that in this process genes are not lost. New allele combinations are rather acquired. This can only occur during meiosis I as it is the only time that homologous chromosomes are present.