Answer:
Artery
Explanation:
Artery carries blood from the heart to other part of the body. While vein return the denourished blood to the heart via the ivc
Answer: The options are not given, here are the options.
A) No the DNA in circulating erythrocytes ins needed to help transport O2 through the capillaries
B) No circulating erythrocytes contain DNA.
C) Yes DNA is responsible for cell division in most cells
D) Yes circulating erythrocytes carry DNA nutrients through the capillaries
The correct option is B.
No circulating erythrocytes contain DNA.
Explanation:
Erythrocytes or red blood cells is a biconcave disc that contain haemoglobin which help to carry oxygenated blood in the body.
Circulating erythrocytes do not contain dna because they lack nuclei and organelles, cannot synthesize any RNA, therefore cannot divide and have limited repair capabilities.
Because they cannot carryout protein synthesis, no virus can evolve and invade the red blood cells.
Answer:
directional selection, is a mode of negative natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.
Answer is B. Heliotropism
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