Explain the actions the commercial grower can take in the following scenario. Situation: A plant hybridizer has been making multiple crosses between varieties of blackberry and raspberry, trying to produce a plant that produces the best fruit on the best and hardiest canes. One particular cross appears to be perfect, with one exception; the fruit is sterile, and produces only sterile seeds.​

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

The body is protected against harmful flu viruses by

Svetlana and her mother are very similar. both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. which statement  most likely  describes svetlana’s traits? svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment. svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment. svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment. svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.