Inventory of My Traits In your notebooks write down if you have the following traits. I have attached earlobes. I can roll my tongue. I have dimples. I am right-handed I have freckles. I have naturally curly hair. I have a cleft chin. I have allergies. I cross my left thumb over my right when I clasp my hands together. I can see the colors red and green. The hairline on my forehead is straight.
Traits of Our Class Trait Yes No Detached earlobes Tongue rolling Dimples Right-handed Freckles Naturally curly hair Cleft chin Allergies Cross left thumb over right See the colors red and green Have a straight hairline
Types of Reproduction Science 7
Why is Reproduction Important? Survival Evolution (changing over time) Pass on genes to the next generation
How Does One Cell Become Two? Prokaryotic cells Reproduce asexually Eukaryotic cells Reproduce both sexually and asexually
Asexual Reproduction Requires only one parent Mitosis Organisms pass on their entire set of genes to the next generation Most unicellular organisms reproduce this way
Asexual Reproduction Binary Fission Process called binary fission (two) (divide) Makes a copy of the DNA and then divides in two The result is two identical cells https://www.youtube.com/watch?v=DY9DNWcqxI4
Advantages vs Disadvantages of Asexual Reproduction Fast More offspring Only need one parent No genetic diversity No individual has a survival advantage Longer to evolve
Sexual Reproduction Requires two parents Two cells meet to form one and then continue to reproduce One gamete (the egg) meets with the other gamete (the sperm) to form the zygote (the baby)
Advantages vs Disadvantages of Sexual Reproduction Genetic diversity Ability to adapt more quickly Live longer Takes longer Less offspring Need two parents
Asexual vs Sexual Reproduction Asexual Reproduction Sexual Reproduction Prokaryotic and eukaryotic One parent Parent passes on their entire set of genes Most unicellular organisms Binary fission Eukaryotic Two parents Each parent passes on half its genes Two cells meet to form one
Brain Pop https://www.brainpop.com/science/cellularlifeandgenetics/asexualreproduct ion/