reproduction

Question 1

sexual reproduction is the

Answer 1

process involving the fusion of the nuclei of two gametes to form a zygote and the production of offspring that are genetically different from each other

Question 2

what is a zygote

Answer 2

fertilised egg cell

Question 3

for sexual reproduction how many parent organisms are needed

Answer 3

2

Question 4

gametes in sexual reproduction are produced through

Answer 4

meiosis

Question 5

is sexual reproduction a slow or fast reproduction process

Answer 5

slow

Question 6

after fertilisation in sexual reproduction, the offspring develops through what type of cell divisions

Answer 6

mitotic

Question 7

Offspring produced by sexual reproduction are genetically ____ to the parent organisms

Answer 7

different

Question 8

offsprings produced by sexual reproduction share ___ the DNA from each parent

Answer 8

half

Question 9

is there variation in sexual reproduction

Answer 9

yes

Question 10

what is a benefit of variation

Answer 10

provides a survival advantage to the population

Question 11

how many chromosones does a zygote have

Answer 11

46

Question 12

sexual reproduction can happen in what organisms (3)

Answer 12

animals
plants
fungi

Question 13

human gametes have how many chromosomes each

Answer 13

23

Question 14

are gametes haploid or diploid

Answer 14

haploid

Question 15

are zygotes haploid or diploid

Answer 15

diploid

Question 16

advantages of sexual reproduction (3)

Answer 16

• variation in offsprings
• better adapted to environmental changes
• disease is less likely as there will be more individuals that are resistant or immune to disease

Question 17

disadvantages of sexual reproduction (2)

Answer 17

• time and energy to find a mate
• not all population will mate and pass on alleles

Question 18

what is a gamete

Answer 18

sperm cells and egg cells

Question 19

sexual reproduction produces genetically ____ cells

Answer 19

different

Question 20

sexual reproduction involves:

Answer 20

the fusion of male and female gametes. because there are 2 parents, the offspring will contain a mixture of their parents genes.

Question 21

meiosis happens in

Answer 21

the ovaries and testes ( only in the reproductive organs)

Question 22

in sexual reproduction, the mother and father produce ___

Answer 22

gametes

Question 23

what does haploid and diploid mean

Answer 23

haploid, meaning that in humans they have 23 chromosomes ( means they have half the number of chromosomes in a normal cell

diploid means a cell that contains two complete sets of chromosomes (46)

Question 24

what happens at fertilisation and how

Answer 24

zygote is formed as a male and a female gamete fuse

Question 25

does a zygote have a full set of chromosomes

Answer 25

yes

Question 26

gametes are

Answer 26

sex cells produced by meiosis

Question 27

gametes in animals

Answer 27

sperm and ovum

Question 28

adaptations of sperm cells

Answer 28

tails to propel them towards the egg and a lot of mitochondria to provide energy for the movement

Question 29

egg cell adaptations

Answer 29

energy stores within the cytoplasm to support early embryo development

Question 30

where does fertilisation happen

Answer 30

in the oviducts