#Id: 9428
#Unit 11. Evolution and Behavior
A- Parental investment is high in females than male
Reason - Eggs are much larger than sperm.
Females are responsible for gestation and lactation.
B - Parental investment is high in males than female - very rare
Male Mormon crickets transfer a protein-containing spermatophore to females during mating. Almost 30% of a male’s body weight is made up by the spermatophore.
C- Parental investment of males is equal to female
Degree of mate choice should be equal between the sexes.
No sexual dimorphism
Present in bird
