In the picture above about half of the chromosomes have two colors, while the other half do not. What most likely accounts for some of these chromosomes not being mixed? Group of answer choices

They did not have a homologous chromosome

They were the outer chromatids of the tetrad

Crossing over did not occur at all in the parent cell

They did crossing over twice and ended up the same again

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.

Resperation is a way to release carbon back into the atmosphere

The mixture of sperm and fluids from the seminal vesicles, prostate gland, and cowper's glands is called