You perform an experiment in which nuclear material (chromatin) is isolated from what appears to be martian cells. You briefly digest with micrococcal nuclease. When the chromatin proteins are removed and the resulting purified DNA is analyzed by gel elecrophoresis, you observe a series of DNA fragments that are multiples of 410 base pairs in length (i. e., 410 bp, 820 bp, 1230 bp, 1640 bp, and so forth). What can you conclude about the organization of DNA and protein in the Martian sample

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

Color blindedness is a sex-linked trait. if we could see the pedigree chart for several more generations of the family illustrated here, we would expect a) more males to be color blind. eliminate b) more females to be color blind. c) no females to ever be color blind. d) an equal number of males and females that are color blind.

Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. match each type of organism to a characteristic that describes it.