"Mutation of Organisms" Heredity and Variation of Organisms PPT Courseware 6

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"Mutation of Organisms" Heredity and Variation of Organisms PPT Courseware 6

Analysis Discussion Questions: P45 Exercise 3

Treating beet seedlings with a chemical can double the number of chromosomes in the cells. Such beets have a high sugar content. Do you think this mutation can be inherited? Why?

Able to inherit

Variations caused by changes in genetic material can be inherited

Analysis discussion questions:

If the seeds of large peanuts are planted in poor soil, the fruits will be small, and if the seeds of small peanuts are planted in fertile soil, the fruits will be large. What causes this difference? Do you think this variation can be inherited?

This difference is caused by the environment

Variations caused by the environment cannot be inherited

Types of biological variation

Heritable variation - variation caused by changes in genetic material

Non-heritable variation - variation caused by changes in environmental conditions

Such as: mice with broken tails, leeks in the greenhouse, etc.

heritable variation

1. crossbreeding

3. irradiate seeds

6. Kernels in corn ears come in three colors

7. Descendants of red-eyed fruit flies appear as white-eyed fruit flies

non-heritable variation

2. Changing the lighting time promotes early flowering

5. With good water and fertilizer conditions, plants grow well

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For more information about the PPT courseware "Variation of Biology, Heredity and Variation of Biology", please click the "Variation of Biology ppt, Heredity and Variation of Biology" ppt tag.

"Mutation of Biology" PPT courseware:

"Mutation of Biology" PPT Courseware Part One: The Phenomenon of Biological Mutation: There are always more or less differences between the parents and offspring of an organism, as well as between individuals of the offspring. This is the phenomenon of biological variation. Thinking: What is the reason why organisms mutate?...

"Mutation of Biology" PPT courseware:

"Mutation of Biology" PPT Courseware Part One: The Phenomenon of Biological Mutation: There are always more or less differences between the parents and offspring of an organism, as well as between individuals of the offspring. This is the phenomenon of biological variation. Thinking: What is the reason why organisms mutate?...

"Mutation of Biology" PPT:

"Mutation of Biology" PPT Part One: Review Introduction What is mutation of biology? It refers to the differences between parents and offspring. Is variation a common phenomenon in the biological world? Can you give some examples? Can variation be inherited? Can you give an example...

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Update Time: 2024-10-01

This template belongs to biology courseware People's Education Edition Biology for Grade 8, Volume 2 industry PPT template

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