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diamong [38]
3 years ago
9

What is the name of a variable in an experiment that does not change?

Biology
2 answers:
Maksim231197 [3]3 years ago
7 0

the controlled variable does not change in an experiment

Margarita [4]3 years ago
7 0

Actually it’s the independent variable

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What impact does increased CO2 in the atmosphere have on marine life?
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Carbon pollution in the atmosphere means the ocean will become more acidic , harming marine life in the process
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3 years ago
What fat measurement corresponds to low-fat ice cream?.
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Low-fat (1 percent) ice cream has three grams or less of fat.

Hope this help
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3 years ago
What organisms are in the chlorophyta reichenbach phylum
lukranit [14]

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6 0
4 years ago
Cystic fibrosis is a recessive genetic disorder caused by a mutation of the CTRF gene. The disease is characterized by excessive
tekilochka [14]

Answer:

Since both Anthony and Sara are healthy carriers of the gene that causes cystic fibrosis, the chance of having a child with this disease are 1:4 (option D).

Explanation:

The inheritance pattern of cystic fibrosis is autosomal recessive, and considering that both parents carry the abnormal CFTR gene, it can be said that the parental genotypes are:

<em>Anthony N/Qf </em>

<em>Sara N/Qf </em>

Where N is the normal gene and Qf is the abnormal gene.

Since this is an autosomal recessive disorder, only the homozygosity of the defective allele will cause the disease to manifest :

N/Qf X N/Qf

<em>Alleles     N       Qf </em>

<em>N            N/N    N/Qf </em>

<em>Qf           N/Qf  Qf/Qf </em>

  • The chances of having a healthy child are 25%.
  • The chances of having a carrier child are 50%.
  • The chances of having a child with cystic fibrosis are 25%.

Therefore, the chance of Anthony and Sara having a child with cystic fibrosis is 1:4.

Learn more:

Cystic fibrosis inheritance brainly.com/question/6584627

8 0
3 years ago
When antidiuretic hormone (ADH) levels are low ________. A a small volume of concentrated urine is excreted B most of the water
sasho [114]

Answer: option B - most of the water reaching the collecting ducts is not reabsorbed

Explanation:

Anti-diuretic hormone is a hormone secreted by the posterior pituitary gland. It acts on the kidney to regulate fluid and salt balance in the body by the reabsorbtion of useful fluid (water) from urine.

Thus, when antidiuretic hormone (ADH) levels are low most of the water reaching the collecting ducts is NOT reabsorbed, resulting in the passage of LARGE volume of dilute urine.

7 0
4 years ago
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