| How many pairs of Chromosomes are there in a Human Body Cell? | -23 pairs of Chromosomes |
| What is the 23rd Pair? Why is it so important? | -The Last pair is the Sex Chromosomes, and are labelled XY
-This simply is the Chromosomes that says if your a Male or a Female |
| Why is the Y Chromosome detrimental for the Sex Chromosomes? | -If there is a Y Chromosome [XY] then it gives the Human Male Characteristics. This is seen in the Embryo- it Develops into a Male
-Lack of Y [XX] will give it no Male Characteristics, so it then has Female Characteristics. This is seen in the Embryo- it Develops Differently |
| When did Gregor Mendel publish his Research? | -1866 saw it Published |
| What exactly did Mendel do? | -He simply first had a Tall Pea Plant, and crossed it with a Dwarf Pea Plant
-This resulted in all the Offspring's being Tall
-However, in the Second Cross [Took 2 Plants from the First Set] he found out that 3/4 of the Offspring's was Tall, so therefore the 'Inherited Factors' [Genes] was Passed on from the Parent. And he also showed that the Tall Inherited Factor was Dominant over the Small, which was Recessive |
| Describe Mendel's work, with Genetic Diagrams | -First Cross: TT + tt =
-Tt, Tt, Tt, Tt, 100% Tall, and Homozygous
-Second Cross: Tt + Tt =
-TT, Tt, Tt, tt =75% Tall, and Homozygous, 25% Tall, and Heterozygous |
| Why was Mendel's work not Picked on Straight away? | -Back then, the Science on Genes wasn't very Known, and its Obvious from him saying 'Inherited Factors'
-His work was linked After his Death |
