"Genes Control Biological Traits" Biological Inheritance and Variation PPT Courseware 3

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"Genes Control Biological Traits" Biological Inheritance and Variation PPT Courseware 3

Self-study outline one:

Mark this in the text:

What is heredity? What is mutation?

How are biological inheritance and mutations achieved?

1. Characteristics of living things

Morphological and structural characteristics: color, shape, and size of apples; size of human nose, face shape, height, etc.

Physiological characteristics: the taste of apples, human blood type, etc.

Behavior: Left-handed or right-handed, etc.

Concept: In genetics, biological _____ __, ______ and _______ are collectively referred to as _______.

practice

Which pair of the following are relative traits and what is your reason?

1. Carp is larger and crucian carp is smaller.

2. Goldfish body colors include transparent and opaque.

3. The surface of plum fruit is smooth, while the surface of peach fruit is hairy.

4. Human yellow skin and dark eyes.

5. Dog’s curly and long hair.

think about it

Do you look more like your dad or your mom?

What do parents pass on to their children to make them like their parents?

What traits are being studied in this study?

Rat body size

What gene controls this trait?

rat growth hormone gene

What does this study illustrate about the relationship between traits and genes? Why?

Genes control biological traits

Class summary

1. Heredity and variation

2. Characteristics and relative characteristics

3. Genes control biological traits

4. Genetically modified organisms (transgenic super mouse experiment)

Training to improve

1. The biological phenomenon explained by the proverb "You will reap melons if you sow melons, and you will reap beans if you sow beans" is ( )

A. Genetic phenomenon B. Variation phenomenon

C. Reproductive phenomena D. Developmental phenomena

2. "One mother gives birth to nine sons, and each of the nine sons is different." The biological phenomenon explained by this proverb is ( )

A. Genetic phenomenon B. Variation phenomenon

C. Reproductive phenomena D. Developmental phenomena

3. Among the following groups, the relative traits are ( )

A. Pig’s black hair and sheep’s white hair

B． Bubble eyes of goldfish and protruding eyes of crucian carp

C. Pumpkin yellow and pumpkin green

D. Straight leaves of rice and curled leaves of wheat

4． Which of the following groups does not belong to relative traits: ( )

A. The wrinkled skin and green color of pea seeds;

B． Human left-handedness and right-handedness

C. Human double eyelids and single eyelids

D. Tall and short stems of pea plants

8. According to reports, my country has developed a new insect-resistant rice variety with widespread promotion value. Scientists transplanted genes from a common legume crop into the rice genome to make it insect-resistant. Because insects cannot digest a protein formed in rice, their digestive systems are damaged and they die, but humans do not suffer any harm after eating this variety of rice.

(1) The biotechnology used to cultivate this new rice variety is genetically modified technology.

(2) This research result shows that traits are controlled by genes.

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For more information about the PPT courseware "Heredity and Variation of Organisms, Genes Control the Characteristics of Organisms", please click the Inheritance and Variation of Organisms ppt, Genes Control the Characteristics of Organisms ppt tag.

"Genes Control Biological Traits" Biological Inheritance and Variation PPT Courseware 7:

"Genes Control Biological Characteristics" Biological Inheritance and Variation PPT Courseware 7 Test You What is the relationship between individual animals in this set of pictures you see? Are each of their children similar to their parents? Is it exactly the same? Why do I look like my parents but not like them at the same time?

"Genes Control Biological Traits" Biological Inheritance and Variation PPT Courseware 6:

"Genes Control Biological Traits" Biological Inheritance and Variation PPT Courseware 6 1. What is heredity? The phenomenon of biological traits being passed on to future generations is called heredity. 2. What is mutation? The differences in traits between parents and offspring of organisms, as well as between individual offspring,...

"Genes Control Biological Traits" Biological Inheritance and Variation PPT Courseware 5:

"Genes Control Biological Traits" Biological Inheritance and Variation PPT Courseware 5 Read and think about the following questions. Mark them in the text: What is heredity? What is mutation? How are biological inheritance and mutations achieved? What is a trait? What is relativity...

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Update Time: 2024-10-07

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

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