2.4 - Mistakes Flashcards

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1
Q

Devise an investigation to determine to effect of pH on the rate of growth of pollen tubes.

A

Test at least 5 different pH values
Add a sucrose solution
Check results after an hour
Use length/time
Place in a water bath
Repeat and calculate a mean

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2
Q

Explain the role of the centrioles in sperm following fertilisation.

A

Be the source of centrioles in the zygote
So spindle fibres can be made
So zygote can divide by mitosis

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3
Q

Explain how meiosis gives rise to genetic variation in gametes.

A

Independent assortment and crossing over
Independent assortment - Gives rise to different combinations of chromosomes
Crossing over - Swapping of sections of chromosmes

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4
Q

If the production of mRNA is inhibited, how will this affect the growth of a pollen tube?

A

Decrease
Less transcription so less protein produced
Protein is needed for pollen tube growth

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5
Q
A
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