Dominanace

In this lab activity i learned that there are three types of dominance. There is dominance, which is when the allele is completely dominant over the other. In this lab, the pea plants showed this. Then there is co- dominance. This means that both the alleles of a certain trait are expressed equally. In the lab the lentils showed this. The next type is incomplete dominance. This mean that one allele for a specific trait is not completely dominant over the other. I thought the most interesting on was what would happen when you bred a white and red snapdragon. The offspring turned out pink meaning that both the allele had mixed together to create a whole new snapdragon. This showed incomplete dominance.

Cytokine sis and Mitosis Reflection

In class we worked on two labs. These labs were suppose to teach us more about cell division. In out first lab i learned about all the stages of cell division. The first part of cell division is interphase. That is when  the chromosomes and the DNA double themselves within one cell. The next stage is prophase.In prophase the chromosomes start moving. The next stage is metaphase. In this stage the chromosomes all align in the center of the nucleus, getting ready for the next stage. Then there is annaphase, the chromosomes move to opposite poles of the cell. In the last stage, telophase the new membrane starts being created around the duaghter nucleii, preparing for cell division. Even though the process is very complex cells may not take very much time to duplicate and probably spend most of the time in interphase. 
In my second lab, i learned to tell apart the nucleus of a dividing and non-dividing cell. I looked at the time of an onion root. When you looked for a non-dividing cell it was just pure purple. And in a dividing cell you notice little dots which are the chromosomes on the onion tip root. I also found it interesting that plants are mainly used in experiments like these because there are constantly growing and going through cell division. 
I also learned that there is one difference between mitosis and meiosis which is that meiosis is a cell division between sex cells.During that process 4 daughter cells are created since there are two nuclear divisions.

 

Size doesn't matter

               "When it comes to male crayfish, not all claws are created equal". In these crustaceans, the left and right claws may very in size. — and the larger one isn't always the strongest out of the two.

This tactic is used to trick the opponent when in a fight.Also , this suspects suggest that within a species, “dishonesty occurs in nature more commonly than we expect.” 

When a two crayfish collide the male decides whether to fight or just leave. Research shows that a smaller, stronger crayfish may back down to a bigger, weaker crayfish. This shows how the bluffing tactic would be used. Studies show that a smaller limb would be stronger then the larger limb. The size and strength of the two claws might provide an advantage during a fight. It is also shown that crayfish many regrow there claws after injury. If theses tactics are used in crustaceans it could show a lot of dishonesty within nature.

                I thought this was interesting because it shows how a animal as simple as a crayfish could trick some one. It is interesting how it was related to dishonesty in nature.