In which of the following cellular processes do homologous chromosomes pair up to form tetrads?
a. mitosis
b. meiosis i
c. meiosis ii
d. interphase

Ascientific idea becomes valid when it is what?

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?