Draw a punnett square to show a cross between a chocolate lab that is homozygous dominant for the epistatic gene and a black lab that is heterozygous for the epistatic gene and homozygous for the color gene. describe the genotype and phenotype of the possible offspring.

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 function of the nucleus in the euglena cells you observed?

If garbage is left on the street flies in microbes can arise from nothing to feed on it true or false