Los cromosomas son paquetes de información ya que contienen los genes que son las unidades que determinan las características hereditarias de los organismos. Las diferentes especies poseen un número constante de cromosomas tanto en células somáticas, las cuales se obtienen por mitosis, como en sus células sexuales o gametos que se producen por meiosis. La meiosis es la etapa del ciclo celular en que se divide el núcleo, repartiendo equitativamente el material genético previamente recombinado y da origen a células encargadas de la reproducción, es decir, los gametos, que son células haploides

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material