True or false: wes j. Moore was very close to his father

4. What genotypes of parents will have only white-fur offspring? Parent 1 genotype = Parent 2 genotype = What genotypes of paren

AnnZ [28]

Answer:

All white offspring: Parent 1 genotype = homozygous dominant

Parent 2 genotype = homozygous/heterozygous dominant

For all black offspring: Parent 1 genotype = homozygous recessive

Parent 2 genotype = homozygous recessive

Explanation:

The cross was between a white mouse and a black mouse and the phenotypic ratio of the resulting offspring is 50% white and 50% black.

Assuming that fur color in the mouse is represented by the allele A (a), In order to give 1:1 phenotypic ratio of the offspring, it means the white mouse is heterozygous with Aa genotype and the black mouse is homozygous with aa genotype. Also, it means that the allele A is dominant over the allele a.

Aa x aa

Aa Aa aa aa

Aa = white

aa = black

Ratio of white to black = 50/50 or 1:1

Hence, in order for a cross to yield only white offspring, the parents can either be homozygous AA and AA or one will be homozygous AA and the other will be heterozygous Aa.

1. AA x AA

AA AA AA AA (all white offspring)

2. AA x Aa

AA Aa AA Aa (all white offspring).

In order to produce only black offspring, both parents must be homozygous aa.

aa x aa

aa aa aa aa (all black offspring)

4 0

3 years ago

These jars show the set-up from Francesco Redi's experiment with meat and maggots. After a few days of sitting out, the covered

Leni [432]

Answer:

Francesco Redi's experiment was the first experiment that disproved the theory of sponatenous generation. He explained that life cannot originate from the inorganic or non living matter.

He placed the two maggots in two different jars. The one jar is uncovered and contains meats in which maggots appear. The another jar is covered and no maggots appear on meat. This explains that maggots flies eggs are not formed in the covered jar as eggs are not available for the life. Maggots do not originate from the meat.Life originate from the pre existing life.

8 0

3 years ago

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Based on the current understanding of this operon, which hypothesis would be useful for James to test? Addition of allolactose t

morpeh [17]

<h2>Answer</h2><h2>The answer is: Addition of allolactose to the bacterial growth media should increase the speed at which the bacteria metabolize the sugar lactose.</h2>

Explanation:

I took the quiz

4 0

3 years ago

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Describe two examples of steroids and their physiological function.

Musya8 [376]

Testosterone is a steroid. Its physiological functions are:

Determines the the gender of a developing embryo

Development of reproductive organs and the prostrate gland in males

Responsible for secondary sexual characteristics in males such as deeper pitch, increased muscle bulk, hair on the upper lip

Regulates normal sperm development

Another is cholesterol. Physiological functions are:

Helps maintain the structure of cells and vessels improving overall health and function in the body.

Percursor to important sex hormones such as testosterone and estrogen.

Used as an insulator around nerves and is absolutely essential for brain function.

Precursor to Vitamin D, which supports a healthy immune and nervous system

6 0

3 years ago

A client is being prepared for discharge from an ambulatory surgical clinic after a cataract extraction and an intraocular lens

lesya692 [45]

Answer: The correct answer to the question is option 1

I SHOULD CALL THE CLINIC IF MY EYE BEGINS TO HURT.

Explanation: Cataract is the opasity or clouding of the lens of the eye making it to deviate from it's normal natural transparent/clear form.It is characterised by blurry vision.Treatment of cataract is by removal of the opaque cataract and replacing it with an clear artificial lens.

Cataract extraction and intraocular lens implant is a generally safe procedure,so when pain occurs after the procedure,it indicates that infection has set in or there is bleeding in the procedure site and it is advices that when a patient notices any of these,it should be reported immediately. Certain things should be avoided after cataract extraction and intraocular lens implant, things like soap,having a bath,washing the hair can all irritate the eye so all these should be avoided from few days to atleast 2weeks after the surgery.

When the patient that has undergone cataract extraction and intraocular lens implant experiences flashes of light,it indicates they there is retinal detachment,this is not expected, but if it is experienced by the patient,it should be reported immediately too.

As mentioned earlier, cataract extraction and intraocular lens implant is generally a safe procedure and rapid improvement in vision is always recorded in some people although some other patients stay several weeks before they achieve an improvement in visual acuity.

7 0

3 years ago

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