1. Genetics

2. The production of young by only one PARENT No SEX Cells
Asexual Reproduction
The production of young by only one PARENT
No SEX Cells
Offspring are IDENTICAL to parents

3. The production of young by two PARENTS SEX cells (sperm and egg)
Sexual Reproduction
The production of young by two PARENTS
SEX cells (sperm and egg)
Offspring are SIMILAR to parents

4. GLEEPS

5. Production of Sex Cells (Meiosis)
1. SIMILAR events to mitosis
2. Occurs ONLY in the TESTES and OVARIES to produce egg and sperm cells.
3. REDUCES the NUMBER of chromosomes to half the normal number.
4. ONE replication followed by TWO cell divisions.

6. Meiosis

7. FERTILIZATION the union of the egg and sperm nuclei
restores the normal chromosome number.

8. ZYGOTE
a fertilized egg

9. SPERMATOGENESIS 1. occurs in TESTES 2. EQUALLY sized cells
3. FOUR sperm cells produced

10. Spermatogenesis

11. OOGENESIS 1. occurs in OVARIES 2. DIFFERENT sized cells
3. ONE egg cell produced and three POLAR bodies

12. Oogenesis

13. Horsefly Chromosome Lab

14. Patterns of Inheritance

15. DOMINANT
the trait that SHOWS in a cross between two true-breeding parents
Example in Cattle -- Black coat color, polled
Example in Sheep -- White wool
Example in Swine -- Black hair

16. Recessive the trait that is HIDDEN in a cross between two individuals.
Example in Cattle -- Red coat color, horns, dwarfism
Example in Sheep -- Black wool
Example in Swine -- Red hair

17. PHENOTYPE
the OUTWARD appearance of the organism

18. Genotype
the actual GENE MAKEUP of an organism

19. Homozygous when both of the genes (letters) in the pair are the SAME
Example -- TT or tt

20. Heterozygous
when both of the genes (letters) in the pair are DIFFERENT
Example -- Tt

21. Incomplete Dominance
The genes are neither dominant nor recessive, but are equals
Example -- Shorthorn Cattle
WW=White
RR=Red,
RW=Roan