Adiploid organism has a somatic chromosome number of 16. the centromeres of the 8 homologous pairs are designated as aa, bb, cc, dd, ee, ff, gg and hh, with uppercase letters referring to the centromeres of maternal chromosomes and lowercase letters to the centromeres of paternal chromosomes. each centromere represents one chromosome. where n = the haploid chromosome number. how many different combinations of centromeres could be produced during meiosis?

a.) 8
b.) 64
c.) 256
d.) 512
e.) 6561

Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed