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Science 9

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PRESENTATION OUTLINE

Welcome Grade 9

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RULES & REGULATIONS

  • Respect your classmates
  • No bullying
  • Be on time
  • Be attentive
  • Respect your teachers

NON-MENDELIAN INHERITANCE

WEEK 4-5 1ST QUARTER

In this lesson, You are expected to learn the different patterns of Non-Mendelian inheritance.

What is Non-Mendelian Inheritance

This is a type of inheritance where in the patterns of phenotypes does not coincide with those that was presented in the Mendelian Laws of inheritance

Incomplete dominance

Pattern of heredity in which one allele is not completely dominant over another

Codominance

Pattern of heredity in which bot alleles are simultaneously expressed in the heterozygote

Multiple alleles

A gene that is controlled by more than two alleles

Pleiotropy

When one gene affects multiple characteristic

Lethal allele
Allele that result in the death of an individual

Polygenic trait
Traits that are controlled by multiple genes

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