Reproduction (B13.)

  • Created by: cieran_10
  • Created on: 26-09-18 02:52
What does asexual reproduction NOT involve?
The fusion of gametes.
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From who, in asexual reproduction, does all of the information come from?
One parent.
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Why is it that there will be little variatio between the parent and the child from asexual reproduction?
As the offpsring will be gnetically identical to the parent.
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What is the name given to indetical copies (of cells and organisms) in asexual reproduction?
Clones.
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What is the process used. by organisms, to form clones?
Mitosis.
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What does sexual reproduction involve?
The fusion of gametes.
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Why is it that offpsring show variation from sexual reproduction?
As there is a mixing of genetic information.
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By what process are gametes formed?
Meiosis.
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How many chromosones are in a single gamete and what is this compared to a normal body cell?
23, which is half of the usual number.
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What happens, to the chromosones, when two gametes fuse to form a zygote?
The chromosone number is restored to 46.
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What is the name given to both female and male gametes in animals?
Sperm and egg cells/ova.
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What is the name given to both female and male gametes in plants?
Egg cells and pollen.
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Why is it that offpsring, produced by sexual reproduction, cannot be indentica to both parents
As they are made from a COMBINATION of two sets of genes from both parents.
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What happens to the genetic material before the cell division during meiosis?
It is copied before the division.
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What is a zygote?
It is a single body cell with new pairs of chromosones.
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By what process does a zygote develop into an embryo?
Mitosis.
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Name four advantages of asexual reproduction.
Only one parent is needed, it is more time and energy efficient as organisms do not have ti find a date, it is muh faster than sexual reproduction, many identical offpsring can be produced by mitosis if the conditions are right.
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Name two disadvantages of asexual reproduction.
Offspring are clones and if the environmental conditions change, all of the offspring will be affected.
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Name three advantages of sexual reproduction.
There is variation in the offspring, if the environment changes variation gives survival to some by natural selection and natural selection may be accelerated by humans in selective breeding to increase fod production.
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Name three disadvantages of sexual reproduction.
Two parents are OFTEN needed, it takes time and energy to find a mate and it is usually slower than asexual reproduction.
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When do malarial parasites reproduce asexually?
In the human HOST.
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When do malarial parasites reproduce sexually?
In the mosquito itself.
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When does fungi reproduce asexually?
Spores (prodcued from mitosis.)
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When does fungi reproduce sexually?
When they need to give variation in adverse conditions.
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When do flowering plants reproduce sexually?
When the pollen and egg cells (made by meiosis) fuse to form seeds.
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When do floweing plants reproduce asexually? Give na example.
When they produce offpsring through mitosis. For example: runners from strawberry plants and new bulbs from daffodils.
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Other cards in this set

Card 2

Front

From who, in asexual reproduction, does all of the information come from?

Back

One parent.

Card 3

Front

Why is it that there will be little variatio between the parent and the child from asexual reproduction?

Back

Preview of the front of card 3

Card 4

Front

What is the name given to indetical copies (of cells and organisms) in asexual reproduction?

Back

Preview of the front of card 4

Card 5

Front

What is the process used. by organisms, to form clones?

Back

Preview of the front of card 5
View more cards

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