C. The amounts of A,T,G and C in DNA is constant across species. Any species' or organism's DNA should have an equal amount of guanine and cytosine.
As well as adenine and thymine, according to Chargaff's standards. It is expected that the purine and pyrimidine bases have a 1:1 stoichiometric ratio, or A+G=T+C.
Erwin Chargaff made some crucial findings about the nitrogenous bases in DNA. He determined the relative amounts of the bases A, T, G, and C in DNA of various organisms.
Parity Rule No. 1
A% = T% and G% = C% are the proportion base pairs that are globally equal across double-stranded DNA molecules, according to the first rule.
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the effects of neurotransmitters tend to be , whereas the effects of hormones tend to be . group of answer choices slower; longer lasting faster; a shorter duration slower; a shorter duration faster; longer lasting
The effects of neurotransmitters tend to be faster and of a shorter duration, whereas the effects of hormones tend to be slower and longer lasting.
This is because neurotransmitters act over short distances and rapidly transmit signals across synapses between nerve cells, while hormones travel through the bloodstream and act over longer distances, affecting target cells throughout the body. Hormones also tend to have a longer-lasting effect because they often initiate complex signaling cascades that involve multiple steps and can lead to changes in gene expression, while neurotransmitter effects are typically more immediate and short-lived. However, it is important to note that the effects of both neurotransmitters and hormones can be influenced by a variety of factors, including the type of receptor they bind to and the specific signaling pathways they activate.
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which of the following statements is true with respect to the genetic risk of cancer? group of answer choices an individual's risk of developing cancer is influenced by genetic as well as environmental and lifestyle factors. hodgkin's disease is directly caused by exposure to radiation and is not linked to heredity. scientists think that the majority of cancer types are hereditary. women who inherit the brca1 or brca2 genes will develop breast cancer by age 50.
An individual's risk of developing cancer is influenced by genetic as well as environmental and lifestyle factors is true with respect to the genetic risk of cancer. Option (1)
Cancer cannot be inherited by a kid from a parent. Moreover, tumor cell genetic alterations are not transmissible. Yet, if a genetic alteration that raises the risk of cancer is found in a parent's sperm or egg cells, it can be passed down (inherited).
What exactly is a cancer risk gene?The p53 or TP53 gene is the one that is most frequently altered in cancer patients. Almost 50% of tumors have a defective or absent p53 gene. Most mutations in the p53 gene are acquired. Although germline p53 mutations are uncommon, those who have them have an increased chance of developing a wide range of cancers.
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which of the following statements is true with respect to the genetic risk of cancer? group of answer choices
an individual's risk of developing cancer is influenced by genetic as well as environmental and lifestyle factors. hodgkin's disease is directly caused by exposure to radiation and is not linked to heredity. scientists think that the majority of cancer types are hereditary. women who inherit the brca1 or brca2 genes will develop breast cancer by age 50.6) Meiosis accomplishes all of the following EXCEPT
A) gamete production.
B) reduction of chromosome number (from 2n to n).
C) providing genetic variation in sexually reproducing organisms.
D) growth and repair.
Expansion and repair Meiosis, a specific type of cell division, is the process through which gametes, which have half as many chromosomes as the parent cell, are produced in sexually reproducing organisms.
Which does not occur during meiosis?common mistakes and misunderstandings. Interphase does not occur during meiosis. Despite the fact that a cell must pass through interphase in order to enter meiosis, interphase is not considered to be a part of meiosis.
What is produced as a result of meiosis?Contrarily, meiosis is a unique type of cell cycle that results in the formation of haploid daughter cells by cutting the number of chromosomes in half.
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based on an analysis of ancient hominin skeletons, the percentage of deaths that resulted from inter-species violence has been calculated to be about: group of answer choices 2% 10% 20% 5%
The percentage of deaths that resulted from inter-species violence has been calculated to be about 10%.
This calculation was based on an analysis of ancient hominin skeletons. This percentage is significant because it suggests that violence has been an enduring characteristic of human society. According to researchers, this violence was not limited to conflicts between groups. Rather, it extended to conflicts within groups as well.
The percentage of deaths that resulted from inter-species violence is significant because it suggests that violence has been an enduring characteristic of human society. According to researchers, this violence was not limited to conflicts between groups. Rather, it extended to conflicts within groups as well. This suggests that violence has been an important aspect of human society for a long time, and it is likely to continue to be so.
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What is the principle role of DNA?
A: carry the genetic code
B: keep a spiral helix shape
C: provide energy for the cell
D: remove harmful wastes
Explanation:
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material found in all living organisms.