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3 years ago

Which of the following was originally used to measure bone density?

Biology

1 answer:

Alexus [3.1K]3 years ago

3 0

X-rays used to measure bone density.

Explanation:

The bones density test measured by the X-rays, it measures the content of calcium and other bone minerals that are packed into the segment of bone. Most commonly used parts of bone for testing are spine, hip, occasionally and the forearm. It is generally done to know the chances of osteoporosis. More the bone minerals, more will be density. More density means the higher bone strength. Before the test, a person should avoid having calcium supplement.

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Write an argument to defend whether tomato plant or spinach offspring would be more genetically diverse. Remember that the tomat

JulijaS [17]

Answer:

spinach plants will be more genetically diverse than tomato plants because sexual reproduction generates more genetic diversity than asexual reproduction

Explanation:

In nature, there are two basic mechanisms of reproduction: sexual reproduction and asexual reproduction. Genetic variation can be generated by the following mechanisms: mutations, random fertilization, recombination (i.e., crossing over), and the independent assortment of homologous chromosomes during meiosis. Sexual reproduction involves two parents, thereby new genetic variation can be generated in the offspring through all these mechanisms: new mutations, genetic recombination (which generates new alleles within an organism's offspring), random fertilization, and the random (independent) assortment of homologous chromosomes during meiosis (these last two mechanisms can potentially generate new genetic combinations in the offspring). Moreover, asexual reproduction involves a single parent, and thereby in this case genetic variation can be only generated by mutations that are passed on to offspring.

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lisov135 [29]

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3 years ago

One possible explanation for why is a primary risk factor for autosomal trisomy is that oocytes remain in meiosis I until ovulat

LenKa [72]

Answer:

One possible explanation for why maternal age is a primary risk factor for autosomal trisomy is that oocytes remain in meiosis I until ovulation, which could take place many years after birth, making them more susceptible to damage.

Explanation:

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3 years ago

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Leni [432]

Answer:

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Explanation:

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Indicate if the given direction of lymph flow is correct or incorrect.A) Lymphatic capillaries to collecting vessels B) Lymph no

solniwko [45]

<h3>Answer;</h3>

A) Lymphatic capillaries to collecting vessels -Correct

B) Lymph nodes to lymph capillaries - Incorrect

C) Collecting vessels to lymphatic trunks- Correct

D) Collecting ducts to collecting vessels- Incorrect

E) Thoracic duct to cisterna chyli - Incorrect

F) Right sub-clavian trunk to thoracic duct - Incorrect

G) Intestinal trunk to right lymphatic duct - Incorrect

H) Left lumbar trunk to thoracic duct - Correct

I) Lower extremity lymph to thoracic duct - Correct

J) Right head lymph to thoracic duct - Incorrect

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3 years ago