Curriculum Resources
Take learning to the next level and transform the way you teach with a vast library of ready-to-use, standards-aligned, adaptable curriculum resources. The resources listed below are either available with an Online Learning Subscription which allows you to instruct, assess and track student performance or as individual hands-on classroom resources which can be purchased. Choose from Multimedia Lessons, Curriculum Mastery Games, Flip Charts, Visual Learning Guides, Flash Cards, Vocabulary Cards, and Curriculum Modules available on our online store. PREMIUM ONLINE LEARNING SUBSCRIPTION OPTIONS
  • Select By Standard
  • BROWSE CURRICULUM
    • General Science
    • Life Science / Biology
    • Human Body
    • Earth Science
    • Physical Science
    • Chemistry
    • Math
    • Language Arts
    • Social Studies
 

Phenotypes and Genotypes

Science, Grade 6

Back
 

Table Of Contents: Phenotypes and Genotypes

1. What Are Genotypes and Phenotypes?
A genotype refers to the genetic makeup, or allele combinations, of an organism. A phenotype is the physical appearance of an organism.
2. Dominant and Recessive Phenotypes
If a dominant allele is present, then the phenotype will always be the dominant trait. A phenotype will be the recessive trait when two copies of the recessive allele are present.
3. BB x bb Cross
In this Punnett square, the parental cross results in offspring with only one allele combination. All the offspring would have the same genotype and phenotype.
4. BB x Bb Cross
The offspring in this Punnett square have two different genotypes, but all have the same phenotype.
5. Bb x Bb Cross
For this cross there are three possible genotypes and two possible phenotypes.
6. Probability for a Bb x Bb Cross
You could predict that 75% of the offspring would have black fur and 25% white fur. This is the same percentage that Mendel observed when crossing the F1 generations of pea plants.
© Copyright 2012-2018 NewPath Learning. All Rights Reserved. Privacy Notice * Terms of Use