<span>The correct option is A. SI unit is the standard measure by which a measurement is made all over the world. Length is a measurement, its SI unit is meter and the tool used to measure it is ruler. The other options are wrong because, temperature is measured in kelvin, weight is measured in kilogram and volume in cubic meter.</span><span />
If the number of chromosomes was not reduced before sexual reproduction, any offspring would have too many chromosomes causing genetic defects.
Answer:When we draw a phylogenetic tree, we are representing our best hypothesis about how a set of species (or other groups) evolved from a common ancestor^1
1
start superscript, 1, end superscript. As we'll explore further in the article on building trees, this hypothesis is based on information we’ve collected about our set of species – things like their physical features and the DNA sequences of their genes.
Explanation:
