Sport is to baseball as stem cell is to ? a)cancer b)skin cell c)blastocyts d)animal cell

c) blastocyts

Explanation:

A stem cell is a cell which has the quality to develop into special cell types in the body to perform variety of functions in the body. These cells can be used in the body to replace other cells in the body when the cells are damaged, diseased and do not perform their functions.  

A blastocysts is a group of stem cells which develops in the early embryonic life after continuous differentiation. These cells divide and differentiate so as to develop specialized cells which gives rise to body organs with associated functions in the developing fetus.

cancer   is   essentially   uncontrolled   mitosis   of specialized cells

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: