1. Genetics

2. length of claws eye color size are examples of fur color traits

3. Gregor Mendel (1822-1884) is the father of genetics.

4. gene for brown hairgene for black hair Traits are controlled by Genes are passed from parent to offspring. genes.

5. alleles Brown hair Blonde hair Red hair Black hair These are examples of

6. Each trait is controlled by two alleles, one from each parent. These alleles are located on homologous chromosomes. homologous chromosomes allele for brown hairallele for blonde hair maternalpaternal

7. Alleles may be dominate or recessive. TRAITSDOMINANTRECESSIVE Flower colorpurplewhite Pea coloryellowgreen Pea shaperoundwrinkled Pod colorgreenyellow Plant heighttallshort

8. recessive What type of alleles are t, b, r, g What type of alleles are T, B, R, G dominant

9. An organism is homozygous for a trait. RR rr red white

10. An organism is heterozygous for a trait. Rr red white

11. Is the organism homozygous or heterozygous? Aass Bbtt

12. The set of alleles such as genogenes genotype = genes Tt Bb Ss Hh RR

13. phph phenotype = physical appearance Curly hair Red flower Long wings Brown eyes freckles

14. INCOMPLETE DOMINANCE X red white pink ---- has a blending affect.

15. both alleles are separately expressed. red & white flower X red flower white flower CODOMINANCE

17. Examples of polygenic traits in humans include: skin color eye color hair color height Polygenic traits are traits produced by two or more genes.

18. ? ?

19. recessive dominant

20. homozygous heterozygous

21. genotypes

22. Gray fur brown fur phenotypes

23. Heterozygous Purple X Homozygous White Heterozygous purple P p p p Homozygous white P P pp pp p p

24. A red flower is crossed with a white flower Red flower R R W W White flower R R W W W W R R Red flower X white flower pink flower The offspring are pink