1. Genetics

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

3. Gregor Mendel ( )
is the
father of genetics.

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

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

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

7. Alleles may be dominate or recessive.
TRAITS
DOMINANT
RECESSIVE
Flower color
purple
white
Pea color
yellow
green
Pea shape
round
wrinkled
Pod color
Plant height
tall
short

8. recessive dominant What type of alleles are t, b, r, g

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

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

11. Is the organism
homozygous or heterozygous? Aa ss Bb tt

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

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

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

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

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. dominant
recessive

20. homozygous
heterozygous
homozygous

21. genotypes

22. phenotypes
Gray fur
brown fur

23. P P P p p p p p p p p p Heterozygous Purple X Homozygous WhiteP p
Heterozygous
purple P p p p p
Homozygous
white P p p p p

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