-look at the obvious
-analyze the artwork
-decide on an interpretation
-make a judgement call
Answer:
Lets consider the dominant allele to be represented by T and the recessive allele to be represented by t.
The punnet square can hence be completes as:
T t
T TT Tt
t Tt tt
The blanks can be filled as:
1: t
2: T
3: Tt
4: T
5: Tt
6: t
7: TT
8: Tt
9: tt
10:Tt
Lasts are used for photosynthesis .
They have a double membrane around them.
The space inside is called the stroma. The space may contain starch grains and lipid bodies.
In the stroma are structures called thylakoids.
The thylakoids are stacked to form structures called grana.
The grana contain the pigment chlorophyll along with some secondary pigments.
After hundreds or even thousands of generations both alleles for sickle cell anemia are still common in those of African ancestry. This is supported by two mechanisms: heterozygote advantage and gene flow.
Heterozygote advantage
When an allele is said to be heterozygous, it is carrying one copy of a gene. For example if one carries a copy of sickle cell allele, it will stay in the population even after many generations — natural selection will not be able to remove it and it will be passed on through generations. So, having one copy of that allele is advantageous but not deleterious.
Gene flow
With humans migrating throughout the different parts of the world, sickle cell allele is passed from one person to another or in different populations. It is actually advantageous to have one copy of this allele especially if there’s malaria in the area, which the allele is resistant.
