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Heredity

Heredity. Grade 10 EST. Principles of Heredity. Heredity is the transmission of parents’ character traits to their offspring. Crossbreeding.

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Heredity

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  1. Heredity Grade 10 EST

  2. Principles of Heredity Heredity is the transmission of parents’ character traits to their offspring.

  3. Crossbreeding A pure line is a group of individuals of the same species, which, for a specific character trait, produces only offspring with the same trait, without variation.

  4. Crossbreeding Crossbreeding is the exchange of gametes between two different individuals during sexual reproduction.

  5. Cross-Pollination

  6. Hybrid • A hybrid is an individual obtained by the crossbreeding of two genetically different individuals. • A generation is a group of individuals descended from common parents.

  7. An allele is a possible form of a gene. Different alleles have different nucleotide sequences.

  8. Homozygote vs. Heterozygote

  9. Dominant vs. Recessive DOMINANT recessive Brown Blue Brown

  10. Genotype vs. Phenotype • A genotype is an individual’s genetic inheritance (all alleles). • A phenotype is the expression of the genotype (expressed allele).

  11. Law of Segregation of Alleles • In meiosis, gametes are produced containing half of the chromosomes. • Two alleles for a particular character trait separate when gametes are formed.

  12. Possible Genotypes and Their Probabilities

  13. Law of Independent Assortment

  14. NotesVideoHW pp. 184, 187-190due May 22Tomorrow: Correct HW p. 161-162, 172-174

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