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Authoritative PPT Summary
"Heredity and Variation Phenomena" PPT courseware
Part One: Characteristics
1. What is a trait?
The morphological characteristics and physiological characteristics of organisms are called traits in genetics.
Tongue rolling (can roll tongue, cannot roll tongue)
Forehead hairline (V-shaped, straight-shaped)
Ear lobes (with or without ear lobes)
Eyelids (double eyelids, single eyelids)
Relative traits
2. What are relative traits?
Different types of the same trait in the same organism are collectively called relative traits.
PPT on the phenomenon of heredity and variation, part 2: heredity and variation
1. What is heredity?
The phenomenon of traits being passed from parents to offspring is called heredity.
2. What is mutation?
The phenomenon of differences in trait expression between parents and offspring is called mutation.
Keywords: Beijing Normal University version of the eighth grade biology PPT courseware for the first volume free download, PPT download of inheritance and variation phenomena, .PPT format;
For more information about the PPT courseware "Heredity and Variation of Biology, Phenomena of Heredity and Variation", please click the PPT tab of "Heredity and Variation of Biology" PPT.
"Heredity and Variation Phenomena" PPT:
"Heredity and Variation Phenomena" PPT Part One Content: Learning Objectives 1. Correctly express concepts such as traits, relative traits, heredity, and variation. 2. Be able to give examples of different traits of animals, plants and humans and their relative traits; describe related biological inheritance and variation phenomena. 3. pass..