Answer:
The downward shift is a result of the carbon monoxide molecules binding to the heme group and preventing other oxygen molecules from binding to that same location.
Explanation:
The ultra sound waves coming from the transmitter pass through the body and once they hit a boundary (the baby) they are partially reflected back to the transmitter and the image appears on the screen. The longer the time taken is to reflect, the further away it is, so darker/lighter on the picture.
Short answer:
Dominant alleles/traits mask recessive alleles/traits. If both alleles are dominant, the organism will express that dominant trait. (i.e. RR)
If both alleles are recessive, the organism will express the recessive trait (i.e rr).
If one allele is dominant, and the other is recessive, it typically expresses the dominant trait (i.e.Rr).
<u>Just in case you might need information, read on:</u>
I'll take you back a bit just to help you understand the concept.
Genes carry the information that determines traits that you will get. Specific genes are found in specific locations of your chromosome (locus) and they come in two's and the pairs code for a specific trait. However, the pair of genes do not always match and this is what we call alleles.
Alleles are varied forms of genes. For example, you have a Black allele and a Brown allele for hair color, where Black is DOMINANT and brown is RECESSIVE.
We say dominant because it overrides the recessive if the gene has one of each in its pair. What happens then?
Well, the dominant masks the recessive. The recessive does not go away, but the dominant trait just has a greater effect, which cover the recessive trait . So if we have allele pairs that is black and brown, then the hair color would be black.
If the pair of alleles are both brown, then brown will be expressed because there is no black allele to cover it up.
<span>I found the exercise online and this is the answer:
A.
Non dividing cells exit cell cycleB.
At this point, cell commits to go through the cycle.- If the cell passed the checkpoint, it can now enter the cycle, starting on the first stage: G1
C.
DNA replicates - The cell starts replicating the DNA in the S phase to then later, separate it in two cells.
D.
Centrosome replicatesE. Mitotic spindle begins to form. in the M phase, after passing the G2 checkpoint
F.
Cell divides, forming two daughter cells.- After passing the last checkpoint, the call can finally start mitosis process.</span>