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Akimi4 [234]
2 years ago
13

A couple comes to a genetic councilor concerned about their chances of having a baby with Tay Sachs disease. The husband had a s

ibling die of the disease, which is inherited as a autosomal recessive trait. What are the chances that he is a carrier?
Biology
1 answer:
Sonbull [250]2 years ago
4 0

Answer:

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Explanation:

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Why do experiments usually require a control?
zalisa [80]
Hey There!

Here is your answer:

Your answer is that a experiments should be controlled because the experiment could go out of control which could harm or hurt someone.


Also the definition of a controlled experiment is a part of the experiment that's not touched.

Ex: Water is your controlled experiment that's because our not doing anything to the water.

If you need anymore help just ask me!

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Which statement is false concerning lactic acid?
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SpyIntel [72]
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HELP ASAP<br> Punnett Squares
pashok25 [27]

Answer: The genotype ratio of offsprings of a cross between one homozygous tall plant and one heterozygous tall plant is 2TT:2Tt

The phenotype ratio is that all offsprings will be tall.

The genotype ratio of a cross between two heterozygous red flowers is 1RR:2Rr:2rr. The phenotype ratio is 3 Red flowers: 1 white flower.

Explanation: From the information given, tall is dominant and short is recessive while red is dominant and white is recessive.

Let T represent the allele for tall height, t represent the allele for short height, R represent allele for red flowers and r represent allele for white flowers.

The genotype of a homozygous tall plant is TT, the genotype of a heterozygous tall plant is Tt, the genotype of a heterozygous red flowered plant is Rr.

The possible genotypes of offsprings of a cross between one homozygous tall plant and one heterozygous tall plant are TT and Tt.

Tt will manifest outwardly as tall because T is dominant over t. Therefore, all the offsprings will be tall.

The possible genotypes of a cross between two heterozygous red flowers are RR, Rr and rr. RR will manifest as red, Rr will also manifest as red because R is dominant to r while rr will manifest as white because white allele (r) is recessive. Therefore 3 plants will be red-flowered while 1 plant will be white flowered.

See the attached punnet squares for details of the cross.

4 0
3 years ago
The greenhouse effect is
svlad2 [7]

Answer:

The greenhouse effect is

A) human activity has no effect on elements, chemical compounds, and other forms of matter.

B) living organisms are not limited by any one nutrient.

<u>C) nutrients are circulated throughout the biosphere. </u>

D) many nutrients do not reach toxic concentrations in the biosphere.

Explanation:

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3 years ago
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