Review “Asexual; and Sexual Reproduction - Amoeba Sisters”
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Sexual reproduction Notes, March 3, 2021
Sexual reproduction
two parents contribute genetic material
Each gives 1/2 of the DNA
create genetically unique offspring
used by animals, plants, fungi, and protists
Vocabulary:
Egg - female sex cell (animals)
made in ovaries
(in humans contains 23 single chromosomes)
pollen in plants
Sperm - male sex cell (animals)
(in humans contains 23 single chromosomes)
made in testis
ovule in plants
fertilization - joining of egg an sperm
(in humans results in 23 pairs of chromosomes)
Zygote - fertilized egg
able to grow through mitosis
Meiosis - cell division process that makes sex cells
produces haploid cells with random 1/2 of the chromosomes
Diploid - body cells with pairs of chromosomes
Haploid - sex cells with random 1/2 of the chromosomes
Advantages of Sexual reproduction
Increased genetic diversity
makes diverse organisms
differences may be an advantage that increases survival
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