The right answer is false.
All the physical characteristics of an individual, which are at the basis of genetic characters (sometimes even epigenetic), are transmitted to his offspring.
Classical or monogenic Mendelian inheritance is based on the transmission of a single gene in a dominant, recessive mode, linked to the sex chromosome X (or Y), or more rarely mitochondrial (extranuclear) chromosome.
False, the physical trait that makes it easier for an organism to access food supplies is likely to pass from the parents to the offspring.
Further Explanation:
Traits refer to the characters that are present or expressed by the organism. Some of the traits are inherited while others are acquired during the lifetime of an individual.
Inheritance is the term which is used to refer to the condition when certain traits are passed on from the parents to offspring.
Offspring are more similar to their parents than to others as the genes that encode a protein and ultimately lead to the expression of traits that are passed on from parents to offspring.
The physical trait that confers an organism’s ability to access food supply is likely to pass from parents to their next generation. Example: Giraffe having a long neck can easily eat leaves from tall trees so they pass on this trait to their offspring also.
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Answer Details:
Grade: High school
Chapter: Inheritance
Subject: Biology
Keywords:
Physical trait, organism, offspring, inheritance, traits, giraffe, trees, leaves.
Explanation:
During inflation, air moves in the lungs when the air pressure within the alveolar spaces falls below the atmospheric pressure
The forces that normally cause changes in volume of the chest and lungs arises not only from muscle contraction but from the elastic properties of both the lung and the chest
The force required to maintain inflation of the lung and to cause airflow is provided by the chest and diaphragm (the muscular partition between chest and abdomen), which are in turn stretched inward by the pull of the lungs
Hence during lung inflation, the lungs cling to the internal surface of the chest wall as it expands
James Watson and Francis Crick, along with the help of Rosalind Franklin's X-ray crystallography data, are credited with first identifying the structure of DNA as a double helix.
The identification of the structure of DNA as a double helix is one of the most significant discoveries in the history of biology. In 1953, James Watson and Francis Crick, both scientists at the University of Cambridge, proposed the double helix model for DNA based on their understanding of its molecular properties and the X-ray crystallography data provided by Rosalind Franklin and her colleague Maurice Wilkins.
Rosalind Franklin, a talented biophysicist, used X-ray crystallography to study the molecular structure of DNA fibers. Her X-ray diffraction images, including Photo 51, provided crucial insights into the helical nature of DNA and its dimensions. Although she did not directly contribute to the final model proposed by Watson and Crick, her work was instrumental in guiding their understanding of DNA's structure.
In April 1953, Watson and Crick published their landmark paper in the journal Nature, titled "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid." In this paper, they described the double helix model of DNA, with the two strands forming a twisted ladder-like structure, and the base pairs holding the strands together like rungs on the ladder.
The identification of DNA's structure as a double helix provided a crucial foundation for understanding how genetic information is stored and transmitted in living organisms. This discovery paved the way for advancements in genetics, molecular biology, biotechnology, and other fields, transforming our understanding of life at the molecular level and earning Watson, Crick, and Wilkins the Nobel Prize in Physiology or Medicine in 1962.
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Answer:
Friedrich Miecher was the Swiss chemist who first identified DNA in 1860. It was first identified in the nuclein which is found inside nuclei of the human white blood cells. The nuclein was later on named as nucleic acid. The type of nucleic acid was identified as deoxyribonucelic acid.
Answer:
The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration.
Explanation:
The possibility of early diagnosis of fetal anomalies of various kinds (neural defects, chromosomopathies, etc.) has been one of the top concerns of gynecologists and geneticists, for obvious reasons.
Throughout these years, prenatal diagnostic techniques have been developed that allow therapeutic decisions by doctors or viability of pregnancy by parents. These techniques are initially performed with non-invasive methods (biochemical determinations, ultrasound), and if the suspicion is increasing, it is passed to more invasive techniques such as amniocentesis or chorionic villus biopsy.
Given that in the latter there is a risk of loss of pregnancy, it is previously attempted to ensure that the indication is correct, and for this, new biochemical tests and risk calculation systems have been added.
Until recently the criterion for establishing the risk of fetal chromosomal abnormality was the mother's age, since there was a clear relationship between maternal age and chromosomal abnormalities, especially Down. The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration. The problem was that a small number of cases were detected. Therefore, other parameters have been sought that estimate more precisely those subsidiary chaos of early detection.
The estimation of the risk in a given pregnant woman is done by multiplying the risk associated with her age for the specific gestational age.
Currently, most prenatal tests consist of AFP, estriol and human chorionic gonadotropin (hCG), which is the triple test, which is a blood test that assesses the risk in a pregnancy of having a Down syndrome or spina bifida It is not a test that tells us whether or not the fetus has any of these defects. It is a test that tells us the probability of risk of having them. Studies have shown that about 70% of fetuses with Down syndrome can be identified early combining the analysis of the mother's age and the results of the triple test.
b. False
Answer:
crocodile will win
Explanation:
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Answer:
THE CROC 2020!!!!!!
Explanation: