In this video we are now going to look at codominance. You need to understand the difference between genotype and phenotype. The genotype is the set of genes. The phenotype are the physical characteristics that are coded for by the genotype. A monohybrid cross is the study of the inheritance of
What is 'innate behaviour'? Where does it feature in the environment? And how does it compare to 'learned behaviour? Innate behaviour is instinctive; it is determined by our nervous system and does not involve conscious decision. It is often inflexible, such as a reflex response to a stimulus. We
In nature, all organisms compete with each other for resources in order to survive. Competition between members of the same species is what makes organisms evolve. This theory of competition and ‘survival of the fittest’ is called Natural Selection, and was originally proposed by Charles Darwin i
The theory of evolution states that individuals within a species show wide degrees of variation, and those individuals with characteristics best suited to their environment are more likely to survive and reproduce. This theory grew from studying the variations and similarities in living animals and
How does a single fertilized egg grow to become a fully formed human being? Many of the most critical stages happen in the first few days following conception. In this video segment from The Secret of Life, a fertilized egg cell progresses from its earliest stages through cell differentiation and ul
We explain the basic principles of heredity of blood types in this video. We only look at one generation and there will be simplifications. The concept of homozygous and heterozygous inheritance is not looked into. Author: Theresa Sieder Sources: https://en.wikipedia.org/wiki/Blood_type https://en
Gregor Mendel came up with the correct hypothesis for how inheritance of traits works. Mendel published his ideas in 1866, but it took until the 1900’s for his ideas to be recognised. In this video we represent Mendel's work using genetic crosses. VISIT us at www.fuseschool.org, where all of our v
