Decribe the importance of photosynthesis in the producers

Where do homologous chromosomes exchange genetic material through crossing over?               a.  chlorophyll    b.  centrosomes    c.  centromeres    d.  chiasma

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

How is transcription similar to translation in terms of base pairing?