Answer:
Chi square value = 0.3
In order to find the expected value, an assumption of purple flower colour dominance over white flower colour has to be made.
Explanation:
<em>First, we will assume that the purple flower trait is dominant over white flower trait, and that the alleles segregate according to Mendelian standard. Hence, the expected F2 phenotypic ratio will be 3:1.</em>
In order to get the Chi square, the expected phenotype frequency will be calculated thus;
Expected frequency (E) for purple flowered plants = 3/4 x 160 = 120
Expected frequency (E) for white flowered plants = 1/4 x 160 = 40
Observed frequency (O) for purple flowered plants = 123
Observed frequency (O) for white flowered plants = 37
<em>Chi square 
= 
</em>
For the purple colour flower
, which gives 0.075
For the white colour flower
, which gives 0.225
<em>Total = 0.075 + 0.225, which gives 0.3</em>
Before a cell goes through cell division (mitosis), it must grow and make a copy of its DNA which is termed as an Inter-phase.
<u>Explanation:</u>
Some tasks must be carried out by the cells before they undergo division: The cell must grow, it must copy the genetic material (DNA) present in it, and divide into two daughter cells. These steps carried out by cells are termed as cell cycle.
Cells that contains a nucleus or Eukaryota cells, there are two major phases called interphase and the mitotic (M) phase. that comprises the cell cycle.
In inter-phase, growth of the cell and making a copy of its DNA is carried out.
In mitotic (M) phase, the cell separation of the DNA in the cell into two sets and division of its cytoplasm takes place resulting in the formation of two new cells.
Its called adaption when an animal changes itself to be able to survive
Answer:
Lisa and Monica
Explanation:
<em>The correct answer would be Lisa and Monica.</em>
<u>For X-linked recessive disorders, a female can be unaffected, a carrier, or affected. However, a male can either be affected or unaffected and never a carrier. This is because females have two X chromosomes while males have only one.</u>
In addition, completely filled-in shapes in a pedigree mean that such individuals are affected for the trait in question while half-filled shapes mean the individuals are carriers for the trait.
Hence, individuals in the pedigree that are labeled carriers for red-green color blindness are Lisa and Monica (they both have half-filled shapes).
Answer:
The two factors are: moderate temperature and energy source.
Explanation:
A biosphere is that portion of the earth where life occurs which means it consists of water, underground, land, and air. On earth, life can be seen at the bottom of the ocean to 9 km above the earth.
The two major factors that confine living thing to the biosphere is the energy source and moderate temperature. Energy is required by all the organisms present on the earth. Every organism has its own way to gain energy like some gain energy from the sun and some from consuming others.
Moderate and constant temperature is important for the survival of the organisms and to maintain homeostasis in them.
