Exposure to UV radiation causes skin cancer. Identify the part of the skin cell which is damaged by the UV radiation. * Mitochondria Nucleus Ribosomes Cytoplasm

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

What is the meaning of exocytosis ?

Which charactistic is a property of water ?