A01 parental investment

Question 1

What is parental investment

Answer 1

Any investment by a parent in an offspring that increases the offspring’s survival at the expense of that parents ability to invest in any other offspring (alive or to be born)

Question 2

What are the 2 sub titles for the six differences on parental investment

Answer 2

Maternal investment

Paternal investment

Question 3

What are the 2 sections for maternal investment

Answer 3

Why do human females invest more

The cost if maternal investment

Question 4

Intro to maternal investment

Answer 4

Investment is greater cz they produce fewer gametes than males produce gametes

Also cz females can be certain that the child is theirs but males can’t. So females are more likely to invest more cz they no know it’s theirs

Question 5

Why do human females invest more

Answer 5

Because they have an extended period of childcare compared to males e.g. breastfeeding

So not only do they make the greater prenatal contribution of resources through pregnancy but also make the larger postnatal contribution

Question 6

Talk about the costs of maternal investment

Answer 6

They’re high for a female

Min investment for female would be 9 months pregnancy and a few years of childcare. Men only need few moments of copulation and a teaspoonful of semen.

This makes random mating for human females

Question 7

What are the 2 paternal sections

Answer 7

Paternal investment and cuckoldry

Sexual and 3 motivates jealousy.

Question 8

Intro for paternal investment

Answer 8

Less than that of females

1 cz they can father an unlimited amount of children whereas women produce a limited amount

2 female must carry the embryo for 9 months and take care if it tears whereas the male can simply walk away after fertilisation

This means that indiscriminate mating by women coukd be very costky in terms if time and resources. But less costly for a man

Question 9

Talk about paternal investment and cuckoldry

Answer 9

They must protect themselves from risk of cuckoldry therefore they are concerned about sexual infidelity in female partner

Question 10

Talk a about sexual and emotional jealousy

Answer 10

Sexual jealousy is said to have evolved in males as a a solution to the problem if possible cuckoldry