We define 'n' as the number of chromosomes for haploid cell and as the amount of DNA in a haploid cell before replication. Which of the following statements about cell division is correct?
1. After replication a diploid somatic cell is 2n and 2c.
2. The process of meiosis generates from one cell with DNA content 4c four cells with DNA content
3. The first meiotic division results in two cells that are 2n and 2c
4. The process of mitosis generates from one cell with 2n chromosomes two cells with n chromosomes

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up