Compare Cells 3 and 6. Define the ploidy of each cell by u…

Compare Cells 3 and 6. Define the ploidy of each cell by using the correct notation (2n (2x), or n (x)). (2points) Then, describe the differences in their levels of ploidy, number of homologous chromosomes, number of sister chromatids, and the proposed stage or phase of cell division. (8 points) If the image isn’t visible, you can download the PDF file “7-cells” here: 7 cells.pdf Suggestion: keep your writing to no more than 150–200 words, and try to spend about 5–8 minutes on this task.

The sex of birds, some insects, and other organisms is deter…

The sex of birds, some insects, and other organisms is determined by a ZW chromosomal arrangement in which the males have like sex chromosomes (ZZ) and females are ZW. Assume that a recessive lethal allele on the Z chromosome causes death of an embryo in birds. What sex ratio would result in the SURVIVING offspring if a cross were made between a male heterozygous for the lethal allele and a normal female?