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olasank [31]
2 years ago
6

About 88 percent of geologic time is represented by the time span called the ________ era. paleozoic phanerozoic mesozoic precam

brian
Biology
1 answer:
Elina [12.6K]2 years ago
7 0
About 88 percent of geologic time is represented by the time span called the precambrian <span>era.</span>
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Alkaptonuria is an infrequent autosomal recessive condition. It is first noticed in newborns when the urine in their diapers tur
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Answer:

See the answer below

Explanation:

Let the disorder be represented by the allele a.

Since the disease is an autosomal recessive one, affected individuals will have the genotype aa and normal individuals will have the genotype Aa or AA.

Since the four adults are carriers, their genotypes would be Aa.

                    Aa     x     Aa

Progeny:    AA    2Aa    aa

Probability of being affected = 1/4

Probability of being a carrier = 1/2

Probability of not being affected = 3/4

(a) The chance that the child second child of Mary and Frank will have alkaptonuria = 1/2

(b) The chance that  the third child of Sara and James will be free of the condition = 3/4

(c)

(d) If someone has no family history of the disorder, their genotype would be AA.

                 AA     x     aa

                        4 Aa

<em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history </em>= 0

(e)

(f) <em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history</em> = 0

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2 years ago
Is a prosthetic group present in several components of the electron transport chain?
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The answer is true. The prosthetic group is present in several components of the electron transport chain. The complexes one, two and three can have a presence of prosthetic group in which is being referred to as the iron sulfur clusters.

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The r group of an amino acid would need to have what characteristic to be located in a cell membrane?
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The R group should have the ability to form hydrogen bonds.

The R-group take a lot of different chemical forms and can be acidic, basic, polar or non polar. Amino acids that are either acidic or basic consequently have either positive or negative charge. These types of R-groups are stabilized when surrounded by water.

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Due to their structure and function they are differ from each other
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Mr. Wang works in a recycling center. Recyclable materials arrive at the
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Answer: The answer is number 2 and number C

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