The fact that each plant gets only one allele
from each parent plant is detailed in the law of segregation
It is definitely not a primary source: this would be a book itself.
Now, is it a tertiary source? I don't think so: the author of the review should have read the book and should only be referring to this book in the review.
I think it's a secondary source.
<span>Smallest to largest is--
millimeter (0.001m)
decimeter (0.01m)
centimeter(0.1m)
meter (1m)
dekameter (10m)
hectometer (100m)
kilometer (1000m)</span>
