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Marizza181 [45]
2 years ago
14

How is it possible that two brown-haired parents (dominant trait) have a blond-haired child (recessive trait)? Complete the Punn

ett square
Biology
1 answer:
Veronika [31]2 years ago
8 0
Basically the recessive trait of blonde hair has one of four chances of the child being blonde

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a culture of e. coli is irradiated with uv light. the highest frequency of mutations would be obtained if after the irradiation,
Klio2033 [76]

Oftentimes UV light can cause the genetic code of an organism to mutate, leading to a variety of errors, some of which are not compatible with life.

UV light is considered to be a mutagen. What this means is that the exposure of cells to UV light often leads directly to a mutation in the genetic code of that cell. This correlation has been studied extensively and shown to affect the nucleotides of DNA, which are:

  • A base (adenine)
  • T base (thymine)
  • G base (guanine)
  • C base (cytosine)

The exposure to UV light causes the base nucleotides in the DNA of an organism to oxidize. This oxidization causes the base pairs to form dimers. Most often the dimer formed is of a <u>thymine base</u>. This can be thought of as the fusion between two thymine bases, which will alter the frame in which DNA is read and <u>cause all sorts of abnormalities</u>.

To learn more visit:

brainly.com/question/23342892?referrer=searchResults

7 0
2 years ago
mitochondria are important organelles within a cell. what would most likely happen if a cells mitochondria were not functioning
kakasveta [241]
There would be no energy supplied to the cell. Mitochondria is the powerhouse of the cell
7 0
3 years ago
Read 2 more answers
A postmenopausal female client diagnosed with osteoporosis asks the nurse how a decrease in estrogen can cause problems with bon
larisa [96]

Answer:

The correct answer is option a.

Explanation:

Osteoporosis refers to a condition that weakens the bone, and enhances the threat of unanticipated and sudden fractures, also known as porous bones. It leads to an enhanced loss of bone mass and strength. The disease often advances without any kind of pain or signs.  

There is a direct association between the reduction of estrogen post menopause and the emergence of osteoporosis. Postmenopause, the breakdown or resorption of bone takes over the formation of novel bone. Estrogen diminishes the function and number of osteoclasts. Thus, the reduction in the levels of estrogen after menopause leads to bone loss.  

8 0
3 years ago
Brian often interrupts his teacher while she is speaking and frequently forgets to complete his homework assignments. He also ha
Anton [14]

Answer:

Brian most clearly exhibits symptoms of ADHD

Explanation:

ADHD stands for Attention Deficit Hyperactivity Disorder is a medical condition where the affected person develops different brain developmental process that leads to poor attention,restlessness,impatient or impulsive etc.

This type of symptoms are mainly found in children and it may lasts upto adulthood.

This type of behviour affect the child in school and at home.

To cure this disease,the affected person should consult the doctor,apply different therapy,medicines are also used to cure this disease.

3 0
3 years ago
What type of organism is a one-celled organism that functions as a single unit?
Mnenie [13.5K]
Hello there, fellow human being!

The answer is D. unicellular.

Hope this helped!
~Ruru
5 0
3 years ago
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