In female kangaroos (marsupials),multiple choice the paternal x chromosome is always inactivated into a barr body. neither the maternal or paternal x chromosome is inactivated into a barr body. either the maternal or paternal x chromosome is randomly inactivated into a barr body. both the maternal and paternal x chromosomes are inactivated into a barr body, but only in about 50% of the total cells. the maternal x chromosome is always inactivated into a barr body.

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Abody cell has been growing and at synthesis proteins.in the nucleus of this body cell,dna replication is taking place. and a copy of the cells genetic material is copied.which of the following is the best conclusion you can make about the life cycle of this cell ? a) the cell is ready to undergo mitosis.and a chemical signal will send the cell to prophase b)the cell is undergoing meiosis and will cross over the genetic material next c)the cell is in the s phase of interphase and will move next to the g2 phase d) the cell is in the g2 phase of the interphase and is ready to begin diving

What is the one part of the nucleotide  that differs among the other different nucle  tides?