PLEASE HELP Which of these describe how a chromosomal mutation may occur during meiosis?
(SELECT ALL THAT APPLY)

A) Homologous chromosomes separate from each other during meiosis I.

B) Sister chromatids are pulled apart into four separate chromatids during meiosis II.

C) Two homologous chromosomes do not separate properly during meiosis I.

D) Sister chromatids fail to separate during meiosis II.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

What are the four stages of cell signaling?

When you aware sick your body produces more leukocytes.briefly describe where the leukocyte are formed,how they are transported,and where they may be stored.