Answer:
Structures that have no apparent function and appear to be residual parts from a past ancestor are called vestigial structures. Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds.
Explanation:
please give me brainlist and follow
Colour blind male means X'Y
Nomal femal means XX
on crossing you get : 2 X'X ; 2 XY
Genotypes (phenotypes) : 2 XY (normal male) and 2 X'X (carrier female with no colourblindness)
An example of a 3rd class lever is a pair of tweezers!
