Work out the Punnett square & JUSTIFY YOUR ANSWER!!! Bell Work: 2/11/15 Work out the Punnett square & JUSTIFY YOUR ANSWER!!!

Table of Contents: Asexual vs. Sexual Reproduction Objectives Classify methods of reproduction as sexual or asexual. (SPI 0707.4.1) Table of Contents: Asexual vs. Sexual Reproduction

Word Wall: Word of the Day static: showing little or no change, action, or progress

Genetics Project DOMINANT TRAITS Recessive Traits eye coloring brown eyes grey, green, hazel, blue eyes vision farsightedness normal vision normal vision normal vision normal vision nearsightedness night blindness color blindness* hair dark hair non-red hair curly hair full head of hair widow's peak blonde, light, red hair red hair straight hair baldness* normal hairline facial features dimples unattached earlobes freckles broad lips no dimples attached earlobes no freckles thin lips

Genetics Project Directions: 1. You will need to choose one female and one male celebrity. 2. For each celebrity, you need to record the phenotype for the traits listed and pick a genotype. (For example, if Justin Bieber has blonde hair, the genotype would be “bb”. If Selena Gomez has brown hair, her genotype would be either “Bb” or “BB”.) 3. Create a Punnett square to express the possible offspring outcomes. 4. Record the trait the offspring will MOST LIKELY inherit. 5. Draw a picture depicting what the offspring should look like based on inherited traits.

Determining the Sex or Gender of Offspring Sex chromosomes carry genes that determine the sex or gender of offspring. In humans, females have two X chromosomes and males have one X and one Y chromosome. During meiosis, one of each of the chromosome pairs ends up in a sex cell. Baby boy= XY Baby girl= XX Set up a Punnett square to figure out the probability of the gender of the offspring.

Sex Chromosome Probability

Sex Chromosome: Chromosome 23 (XX or XY)

Living Things Reproduce 2 Types of Reproduction: Asexual- a single parent produces an offspring identical to the parent Sexual- two parents produce an offspring with traits of both parents

Challenge Questions When animals go through sexual reproduction, what type of cell division are they going through? meiosis When animals go through asexual reproduction, what type of cell division are they going through? mitosis

Types of Asexual Reproduction In Animals Budding: happens when a part of the parent organism pinches off and forms a new organism. The new organism separates from the parent and lives independently. Jellyfish & hydra

Types of Asexual Reproduction In Animals Fragmentation: parts of the organism break off (which may or may not be intentional) and a new organism grows identical to the parent. Worms & starfish

Types of Asexual Reproduction In Animals Regeneration: organism loses a body part and that part may develop into a new organism, or that part that was lost may re-develop on the organism. Sea star

Asexual Reproduction in Other Organisms Binary fission is a method of asexual reproduction in which an organism splits into two. This occurs in bacteria and other single-celled organisms

Asexual Reproduction in Plants Some plants can reproduce asexually when they are cut or damaged. These plants can sprout new growth from their roots, stems, and leaves. In wild strawberry plants, stems are capable of arching downward and taking root in the ground, resulting in the formation of a new plant. This is an example of asexual reproduction.

T.O.C. Sexual vs. Asexual Lab Stations Number a loose-leaf sheet of notebook paper (in the numbered folder at your group) 1-16, skipping two lines in between each number. At each table, there are two scenarios (real-world examples) of either sexual or asexual reproduction. You and your group will have 2 minutes at each station to do the following: Classify each method of reproduction in the scenario as sexual or asexual reproduction. Justify your answer. The scenarios at the last table will be for extra credit, but it is mandatory that you try them! We will discuss the scenarios first thing tomorrow. When you are finished, you will complete an exit ticket comparing and contrasting sexual vs. asexual reproduction.

Exit Ticket: Compare & Contrast Sexual vs Exit Ticket: Compare & Contrast Sexual vs. Asexual Reproduction using a Venn diagram. Sexual Reproduction Asexual Reproduction