Heredity

Chapter 13

Test Thursday 1-27

Science TEKS 7.14

Organisms and environments. The student knows that reproduction is a characteristic of living organisms and that the instructions for traits are governed in the genetic material. The student is expected to:

(A) define heredity as the passage of genetic instructions from one generation to the
next generation;

(B) compare the results of uniform or diverse offspring from sexual reproduction or asexual reproduction; and

(C) recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes.

Section 1: Genetics

Concepts:

• Genetics, heredity, traits
• Genes, alleles
• Mendelian inheritance
• Hybrids; dominant and recessive genes
• Punnet squares
• Genotype (homozygous, heterozygous) and phenotype

Answer show questions

Practice: p. 390 # 6, 7.

Section 2: Genetics since Mendel

Concepts:

• Incomplete dominance
• Multiple alleles, blood types
• Polygenic inheritance
• Mutations
• Recessive genetic disorders
• Sex determination
• Sex-linked disorders and pedigrees

Polygenic inheritance; mutations and chromosomal disorders; recessive genetic disorders

Thursday 1-13 Friday 1-14

Section 3: Genetic Engineering

Concepts:

• Genetic engineering
• Recombinant DNA
• Gene therapy

Tuesday 1-18

When the above is completed, work on Genetic Engineering Internet activities: go to Learn Genetics and complete as many activities as you can, starting with "What is Gene Therapy".

Learn Genetics