Which tool would be likely to provide the most accurate measurement of time in a laboratory experiment involving sprinting times of students? a wall clock
an egg timer
a stopwatch
a calendar

Where do homologous chromosomes exchange genetic material through crossing over?               a.  chlorophyll    b.  centrosomes    c.  centromeres    d.  chiasma

Twind is considered to be an abiotic factor because it.?

The table above shows five different types of chromosomal abnormalities that can occur during meiosis. they result in either an individual having too many or too few chromosomes in their genome. what is the most likely cause of these chromosomal abnormalities?