Biology Final Study Guide

Biology Final Study Guide Overview

Standards Covered

• SB3.a: Mendel's laws, meiosis, reproductive variability.

• SB3.b: Mathematical models in genetics, patterns of inheritance.

• SB3.c: Sexual vs. asexual reproduction advantages and disadvantages.

Important Terms

• Allele: Variant form of a gene.

• Genotype: Genetic makeup of an organism.

• Phenotype: Observable traits of an organism.

• Homozygous: Two identical alleles for a gene.

• Heterozygous: Two different alleles for a gene.

• Crossing Over: Exchange of genetic material during meiosis.

• Gamete: Sex cell carrying half genetic information.

Mendel's Laws and Meiosis (Standard SB3.a)

• Law of Segregation: Alleles separate during gamete formation.

• Law of Independent Assortment: Different genes independently separate.

• Meiosis: Stages contribute to genetic diversity.

• Crossing Over Significance: Increases genetic variation.

Patterns of Inheritance (Standard SB3.b)

• Punnett Squares: Tools to predict genetic outcomes.

• Dominant vs. Recessive Traits: Understand traits' expression.

• Codominance & Incomplete Dominance: Types of allele interactions.

Sexual vs. Asexual Reproduction (Standard SB3.c)

• Sexual Reproduction:

  • Advantages: Genetic diversity, adaptability.

  • Disadvantages: Time-consuming, energy-intensive.

• Asexual Reproduction:

  • Advantages: Rapid reproduction, low energy cost.

  • Disadvantages: Limited genetic variation.

Practice Questions

• Explain the contribution of Mendel's laws to genetic diversity.

• Identify Mendel's law explaining independent inheritance.

• Use Punnett square for predicting offspring traits.

• Evaluate the advantages of sexual reproduction with examples.