ANIMAL SEXUAL BEHAVIOR

Question 1

Early life inhabitants originated withouts sex, they were using ?

Answer 1

binary fission (asexual reproduction)

Question 2

this were the first to resort to sexual reproduction, it was assumed that it was due to DNA repair

Answer 2

Eukaryotes

Question 3

brings a set challenges for an animal to maintain their genetic material in due course of evolution that leads to the development of diff. sex stragtegies

Answer 3

unisexuality

Question 4

this refers to having two different set of functionality; male & female

Answer 4

sex

Question 5

what are the 2 aspects of sex

Answer 5

1. origin of sexual reproduction
2. how it’s been evolved & maintained

Question 6

sex is a combination of :

Answer 6

1. recombination
2. sexual reproduction
3. gender

Question 7

how offspring differ from it parents

Answer 7

recombination

Question 8

is the result of recombination

Answer 8

sexual reproduction

Question 9

is production of gametes

Answer 9

gender

Question 10

this 4 stated that recombination increase the rate of evolutions by bringing two good mutation together & controlling bad mutation. Decrease the chance of distinction

Answer 10

weisman 1886
muller 1932
crow & kimura 1965

Question 11

2 hypothesis of sex origin

Answer 11

1. genetic hyothesis
2. ecological hypothesis

Question 12

this hypothesis talks about repair & mutation, done by proofreading of DNA polymerase, excision repair & double stranded DNA

Answer 12

genetic hypothesis

Question 13

this hypothesis stated that each organism is race between host & parasite & pathogen are co-evolving & keeping up with them

Answer 13

ecological hypothesis

Question 14

2 reproductive approach

Answer 14

1. various approach (morphological, behavioral & physiological adaptations)
2. various infant survival techniques

Question 15

2 types of reproduction

Answer 15

1. asexual reproduction
2. sexual reproduction

Question 16

this invloves no fussion of gamete or change in chromosome, they’re just a replication copy of their parents with the same set of chromosomes.

can be unicellular & multicellular

Answer 16

asexual reproduction

Question 17

where there is more than one individual, the fusion of gametes or change in chromosomes takes place; can be living in group, communities

Answer 17

sexual reproduction

Question 18

2 reproductive strategies

Answer 18

1. k selection
2. r selection

Question 19

used by animals who have stable resources rich environment; animals involves a significant time in selecting the gene.

Answer 19

k selection

Question 20

This species are large in size, have long geestation period of 18 months. Parental care is provided for first few years living in the group community, chances of survivability of young is quiet high

Answer 20

elephants

Question 21

this strategis is used by animals that unstable, slant resource environment; juvinile mortality is high

Answer 21

R selection

Question 22

this species produce thousands of eggs, each egg is own their own. No parental care is available. 1 in 10,000 eggs will be able to become an adult

Answer 22

oyster

Question 23

3 mating system

Answer 23

1. female mating system
2. male mating system
3. other mating system

Question 24

female mating system is composed of:

Answer 24

1. polyandry
2. resources defense polyandry
3. co-operative polyandry

Question 25

in this system female mates with multiple male partners; parental care is generally done by male

Answer 25

polyandry

Question 26

multiple male forms a group that exhibits some courtship behavior, also known as arena behavior

Answer 26

leks

Question 27

in this systems males have been found to have an attained for multiple patterns, their mating strategies are based on facts and success is based on their copulation & frequency & number of partners

Answer 27

male mating systems