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Worksheetsf4 science chapter 3
Total questions: 25
Worksheet time: 50mins
state the function of mitosis
for body growth
raise up the taste of your mi
produce variation
increase the number of your cells
state the full name of DNA
(a)
the function of meiosis
to produce monster
to produce DNA
to produce gametes
to produce zygote
what are the characteristics of mitosis
chromosome in daughter cell same as parent cell
crossing over occur
divide twice
occur in somatic cell
what are the characteristics of meiosis
have four daughter cells
variation occur
occur in body cell
chromosome in daughter cell twice of the number of parent cell
chromosome in daughter cell half of the number of parent cell
chromatid have _ itself from one to two and form chromosome
separate
line up
divides
duplicate
crossing over can cause _
(a)
what are the characteristics of dominant genes
straight hair
black eyes
ability to roll tongue
cheeks with dimples
unable to roll tougue
what are the characteristics of recesssive genes
short
blue eyes
free ear lobes
attached ear lobes
curly hair
write the chromosome of healthy male human with number form
(a)
write the chromosome of healthy female human with number form
(a)
which are the disease that caused by chromosome mutation
albinism
down's syndrome
sickle cell anaemia
klinefelter's syndrome
turner's syndrome
which are the disease that caused by gene mutation
albinism
colour blindness
common cold
tuberculosis
haemophilia
The skin colour of Lily is white and she hair also colourless. state the mutation of Lily.
(a)
The Twenty-one pair Chromosome of Kelvin has extra. state the mutation of Kelvin
(a)
state the mutation that chromosome written in 44+XXY
(a)
which one is correct as the number form of Turner's syndrome.
44+XO
44+X0
44+XXY
43+XY
The wound of yihui difficult to recovery. state the mutation of yihui
(a)
xiaozhen and her sister have same characteristic and same sex. State the type of twins.
(a)
Adam and her sister birth on same day. State the type of twins.
(a)
When the zygote did not separate well. What the type of twins?
(a)
Which is caused by continous variation?
Body weight
blood group
skin colour
Body size
fingerprint
Which is caused by discontinous variation?
Sex
skin colour
Blood group
Body height
gender
What is Identical twins?
fertilised by one sperm and two ovum.
fertilised by one sperm and one ovum.
fertilised by two sperm and one ovum.
fertilised by two sperm and two ovum.
What is Non-identical twins?
fertilised by two sperm and one ovum.
That have same characteristic.
two zygote have their own placenta.
two zygote share one placenta to develop.
