20 points! ! in return brainliest and special

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Color blindedness is a sex-linked trait. if we could see the pedigree chart for several more generations of the family illustrated here, we would expect a) more males to be color blind. eliminate b) more females to be color blind. c) no females to ever be color blind. d) an equal number of males and females that are color blind.

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f