46 for humans.
That’s 23 chromosomes from each parent.
Urethral orifice or the urinary aperture is the location where the urine is being excreted from the body of an organism. In the case of rats, if its a male rat, the urine is excreted through the urogenital opening- which means that such orifice serves as an opening for both sperm and urine, alternately. For the female rat, just like humans, it is a singular opening
descriptive statistics sum of all numbers divided by the total number of scores; the average = mean
the number that occurs the most often in a given set of number = mode
relationship between two variables = correlation
the middle number in a set of ordered numbers = median
