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Neko [114]
3 years ago
7

How many african american are carries of sickle cell allele?

Biology
1 answer:
noname [10]3 years ago
6 0
A very high ratio of one in eleven
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The answers are central and peripheral

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4 years ago
Nonpoint sources of pollution a. include smokestacks and automobile exhaust pipes b. are more difficult to control than point so
kifflom [539]
B. are more difficult to control than point sources. This is because A. is wrong (point source), and C. is wrong, because it doesn't necessarily cost less or more to identify the sources. D. may be right, as non point sources are natural, such as snow melts or rain.
4 0
3 years ago
Is it possible for plant breeders to develop a true-breeding pink-flowered snapdragon?
abruzzese [7]

Answer:

No.

Explanation:

Pink flower colour in snapdragon is as a result of incomplete dominance. The pink flower colour has no allele in nature. Instead, the pink colour results from incomplete dominance of the allele that codes for red flower colour over the allele that codes for the white flower colour.

Assuming that the allele for red flower colour in the plant is R and the allele for white flower colour is r, true breeding red and white flower colour plants will have the genotype RR and rr respectively. In heterozygote state (Rr), the phenotype is usually pink, showing that the R allele has incomplete dominance over the r allele.

<em>Hence, there is no way for plant breeders to develop a true-breeding pink-flowered snapdragon. without some genetic manipulations/mutation.</em>

6 0
3 years ago
How is heart rate collected during the ymca 3-minute step test to evaluate the cardiorespiratory fitness level of an individual?
vredina [299]

It is measured over a 60-second count immediately following the test.

After completing the test, the individual sits while the fitness professional palpates the radial pulse (within 5 seconds of test completion) and measures the number of heartbeats over the ensuing 60 seconds.

<h3>What is cardiorespiratory fitness?</h3>

Cardiorespiratory fitness (CRF) refers to the ability of the cardiovascular and respiratory systems to oxygenate the mitochondria of skeletal muscle  for the energy production required during physical activity. CKD is an important indicator of adolescents' physical and mental health and academic performance.

Forms of exercise that rely on cardiorespiratory endurance include strenuous distance running, swimming, and cycling. This aspect of fitness  also affects your ability to perform low-intensity, sustained, full-body exercises, such as  walking, without feeling undue fatigue.

Walking briskly, climbing stairs, doing household chores. High levels of physical activity and cardiorespiratory fitness (referred to simply as “fitness” in this article) are associated with reduced all-cause and cardiovascular mortality. In addition, physical activity can reduce the incidence of chronic diseases such as hypertension, diabetes, stroke and cancer.

To learn more about Cardiorespiratory fitness from the given link

brainly.com/question/11285898

#SPJ4

5 0
2 years ago
Where is the hair pigment<br> located?
Feliz [49]
At any dollar general store or CVS or Walgreens
8 0
3 years ago
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