Prentice Hall Biology Mrs. Polley Chapter 11

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1.Genetics-

The scientific study of heredity.

2.Fertilization-

The male and female reproductive cells join together.

3.True- Breeding-

Produce off spring identical with themselves.

4.Trait-

A specific characteristic.

5.Hybrids-

Crosses between parents with different traits.

6.Genes-

Factors are passed from one generation to the next.

7.Alleles-

Produces tall or short genes.

8.Segregation-

The separation of genes.

9.Gametes-

specialized cell involved in sexual reproduction.

10. Probability-

The likelihood that a particular event will occur.

11. Punnett Square-

The gene combinations that result from genetic cross.

12. Homozygous-

Same alleles.

13.Heterozygous-

Different alleles.

14. Phenotype-

Physical characteristics.

15.Genotype-

No same genetic makeup.

16.Independent Assortment-

Separated independently.

17. Incomplete Dominance

Not completely dominant.

18. Codominance-

They share an equal amount of dominance.

19. Multiple alleles-

more than two alleles.

20. Polygenetic Traits-

Having many genes.

21.Homologous-

Four chromosomes have the same parent.

22.Diploid-

Two sets.

23.Haploid-

One set.

24.Meiosis-

The process of reproductive cells when the number of chromosomes is cut in half.

25.Tetrad-

Chromosomes corresponds with each homologous chromosome.

26. Crossing- Over-

They exchange portions of their chromatids.

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