We have
<span>1/4 of 6th graders-----------------(1/4)*152=38
</span>3/10 of 7th graders----------------(3/10)*160=48
2/7 of 8th graders------------------(2/7)*147=42
The answer is 7th graders
Answer: Lymphocytes
Explanation:
During the time of infection the bacteria of the body are killed by lymphocytes. During the time of infection there is an increase in the number of lymphocytes.
Most of the time sudden increase in the number of leukocytes because the immune system of the body is working on the bacterial species inside the body.
The increase in the level of lymphocytes can be a serious indication of leukemia.
<span>arteries
are larger, more muscular and more elastic than veins; they carry blood
that is under pressure from having been pumped out of the heart; veins
are under much less pressure, so they are not as strong</span>
Answer:
Please find the explanation below.
Explanation:
Changes in the genetic sequence of a DNA is called MUTATION. A gene is a segment of the DNA that holds information for the synthesis of proteins, which are responsible for the observable traits in organisms. The expression of a gene brings about the synthesis of a protein that effects a particular trait in an organism. The gene is expressed in two major stages viz: transcription and translation.
Transcription involves production of an mRNA molecule using the encoded information in the genes of a DNA while translation is the synthesis of a protein using the mRNA as a template.
Since, the order of the sequence in a gene determines the order of the sequence in the mRNA which ultimately determines the order of sequence in the protein, a change in the gene of an organism will affect the observed trait of that organism.
More detailedly, a change in the gene will cause a change in the mRNA sequence during transcription. A change in the mRNA sequence will cause a change in the amino acid sequence during translation. A change in the amino acid sequence will affect the protein produced i.e. might not be functional or may not be produced at all. An affected protein will cause a trait in that organism to be affected.
Offsprings, natural selection, a measure of reproductive success.
Explanation:
Pattern of life history in individual or population evolve by Natural selection, Life history pattern optimizes the trade offs as energy spend in raising the offspring.
The energy resources in the earth is limited and organisms had to fight for the resources for growth, multiplication and survival.
The offspring with the traits will use the effective way to use the resources than with the siblings who lack the trait,
The reproductive success is ultimately a measure of natural selection.