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3 years ago

Which of the following is an example of a transgenic organism?

Biology

1 answer:

zhenek [66]3 years ago

5 0

Answer:

d. a bacterium with human gene for producing insulin

Explanation:

Transgenic organisms are the organisms in which the foreign DNA is introduced by using the molecular techniques for obtaining a particular result. This foreign DNA can be introduced using a vector called plasmid vector.

One of the examples of transgenic organisms is E.coli with the human gene for producing insulin. So for producing artificial insulin, the gene which produces insulin peptide is ligated in a plasmid vector and then this plasmid is introduced in the bacterium where this plasmid replicates and produces insulin. So the correct answer is d.

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What type of system is required to maintain the amount of sugar in the blood at a certain level, making sure it does not rise to

Hitman42 [59]

Answer:

Explanation: Toghether, insulin and glucagon help maintain a state called homeostasis in which conditions inside the body remain steady. When blood sugar is too high, the pancreas secretes more insulin. When blood sugar levels drop, the pancreas releases glucagon to raise them.

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3 years ago

Joe is color blind. His mother and father have normal vision, but his mother's father (Joe's maternal grandfather) is color blin

NNADVOKAT [17]

<u>Answer:</u>

a. Using correct symbols and labels, draw a pedigree of Joe's family. Take a picture and send it by email.

The pedigree image is attached at the end.

(b) What is the most likely mode of inheritance for color-blindness in Joe’s family?

X-linked recessive. Only males have the trait, and they inherit the trait from

their mothers, who are carriers. The trait is never passed from father to son.

(c) If Joe marries a woman who has no family history of color-blindness, what is the probability that their first child will be a color-blind boy?

Barring a new mutation or nondisjunction, zero. Joe cannot pass his color-blind X chromosome to his son.

(d) If Joe marries a woman who is a carrier of the color-blind allele, what is the probability that their first child will be a color-blind boy?

The probability is ¼. There is ½ probability that their first child will be a boy,

and there is an independent ½ probability that the first child will inherit the

color-blind X chromosome from the carrier mother. ½(½) = ¼.

7 0

3 years ago

Which best describes the different features of plant life cycles?

aksik [14]

Answer:

The answer is "A spore is a diploid cell that is produces by mitosis.". Both diploid and haploid can undergo mitosis. A diploid cell divides by mitosis in order to produce two daughter cell. Then fuse to produce tetraploid cell.

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3 years ago

The method used to determine whether infants can distinguish one stimulus from another by measuring the length of time they atte

andre [41]

Answer:

visual preference method

Explanation:

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4 years ago

Zinc, an essential trace element for most organisms, is present in the active site of the enzyme carboxypeptidase. The zinc most

spayn [35]

Answer:

D) cofactor necessary for enzyme activity.

Explanation:

Carboxypeptidase is an enzyme found in the digestive system whose function is to hydrolyze a peptide bond in the terminal carbon of a protein. Said enzyme contains a zinc atom in its active site and when losing a zinc atom it would lead to loss of the activity of the enzyme, making it of great importance for the activity of the enzyme.

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3 years ago