7th Grade Science Guide

7.4: Reproduction & Inheritance 3 Dimensions & Progressions

Unit 5

STANDARD ● 7.4.1 Develop and use a model to explain the effects that different types of reproduction have on genetic variation, including asexual and sexual reproduction. (MS-LS3-2)

CONCEPTS

SKILLS

● Asexual and sexual reproduction ● Genetic variation

● Develop a model ● Explain

LEARNING PROGRESSIONS

● Organisms reproduce. ● Some organisms reproduce sexually and some reproduce asexually. ● Genes are located in the chromosomes of cells. ● Genes control the production of proteins that affect traits of individuals.

● Sexual reproduction provides 1 set of genes from each parent which leads to genetic diversity ● Asexual reproduction is where a parent makes a duplicate of itself - no genetic diversity, as the offspring is identical to the parent. ● Animals engage in behaviors that increase the odds of reproduction. ● Plants reproduce in a variety of ways, sometimes depending on animal behavior and specialized features of reproduction.

VOCABULARY

● Reproduction ● Genetic variation ● Asexual reproduction ● Sexual reproduction ● Parent ● Offspring

● Breed ● Fertilize ● Probability ● Recessive ● Dominant

● Gene ● Chromosomes

● Genotype ● Phenotype

POSSIBLE PHENOMENA ● All members of the desert grassland whiptail species are female. ● In a family with four children, two of the children have blonde hair and two of the children have red hair while both parents have red hair. ● A coral colony is made up of genetically identical individuals. END OF UNIT COMPETENCY WITH LANGUAGE SUPPORTS ● I can develop a model to show the differences in sexual and asexual reproduction. ○ Language supports: ■ Nouns to introduce concepts (variation, duplicate, copy, individual, parent, offspring)