Crossing-over contributes to the recombination of genetic material in offspring. When does crossing-over happen during meiosis? Group of answer choices

when homologous chromosomes pair and portions of chromatids break off and are exchanged

when the DNA of the diploid cell is copied

when spindle fibers move the chromosomes toward the midline of the dividing cell

when homologous chromosomes move to opposite ends of the dividing cell

Which of the following is not an example of conflict between related individuals?

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

What sre the effects of hemolytic disease of a newborn