Mitosis and meiosis are the two ways by which cells reproduce. As a result, they share several steps in their respective processes. Meiosis adds another division and a step that mixes the genetic material, but in both cases the cell must duplicate its DNA, pull it apart into two sets, place the sets on each end of itself, and then divide down the middle. Both mitosis and meiosis produce fresh new cells based on their parent cells' genes.
Answer:
B. R is dominant to r, and Rr individuals are red.
Explanation:
In genetics the dominant allele is represented by the uppercase letter and the recessive allele is represented by the lower case letter. A dominant allele always shows its dominance over the recessive allele. So in heterozygous condition dominant allele will reflects itself in the phenotype.
Here allele of red color allele is in capital letter and alleles of green color are shown in lower case which means R allele is the dominant allele and r is the recessive allele. Therefore R is dominant to r and in homozygous condition(Rr) red individual will be formed. So the right answer is B.
Answer:
Explanation:
Since it is a recessive gene, tumor suppressor genes required the inactivation of both alleles, this is usually accomplished by the mutation of one allele and a targeted homozygous deletion of the second allele. This leads to an effective inactivation of the suppressor genes with the mutations acting a a dominant negatives. This way, patients are put at a higher risk of developing cancer
The correct option is B: MAJOR DIVISIONS IN THE SEDIMENTARY ROCK LAYERS.
Geologic time scale refers to a system of chronological dating which relates geological strata to time. Geologic time scale is used by scientists to describe the timing of the events that had occurred in the past, thus the scale divides the earth history into units of varying magnitude. There are four basic block of time, these are eons, eras, periods and epochs.
In determine geological time, rock records provide evidence of past geological events and life forms.
I don’t think so because when you are observing you refer to facts but when you infer you have to hypothesize what the outcome will be
