Which of the following statement is true of a semi-conservative model of replication?1) Each newly synthesized double helix of DNA contains one new strand and one old strand.

2)DNA synthesis involves conserving only part of each of the original strands in a DNA molecule.

3)The original DNA molecule is stored in the cell nucleus and serves as a template for creating copies containing two new strands.

4)DNA synthesis involves conserving one strand of a double helix of DNA and discarding the other.

Answers

Answer 1

Answer: Answer - A
Semi-conservative model of replication involves the replication of DNA in all the familiar cells in such a way that each newly synthesized daughter cell contains a double helix with one new strand and one old strand.

Answer 2

Answer: The statement that is true of a semi-conservative model of replication is "each newly synthesized double helix of DNA contains one new strand and one old strand. The correct statement is A.

Related Questions

Which layer of the Earth is composed of liquid iron and nickel?
Which type of mutation occurs in reproductive cells and can be passed to offspring:?A.somatic mutationB.germline mutationC.point mutationD.frameshift mutation
The Siberian Husky is a medium dog, weighing between 16-27kg (35-60lbs). These dogs have strong pectoral and leg muscles, allowing them to move through dense snow. If they had heavier muscles, they would sink deeper into the snow and move slower. Yet, if they had lighter muscles, they would not be strong enough to pull sleds and equipment. This is an example of which type of natural selection?a. Directional selectionb. Stabilizing selectionc. Disruptive selection
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Which of the following typical adaptations of marine animals is not found in sea otters?a. streamlined body
b. webbed hands and feet
c. body covered in thick fur
d. breathing apparatus on the top of the head

Answers

Unlike fully aquatic marine mammals, or Cetacea, sea otters are bi-terrestrial and are capable of living on both land and in the water. Like all marine mammals, otters have webbing between their toes with acts like a flipper as well as a streamlined body to enable them to move quickly through the water. The only adaption that is not applicable to otters is d. breathing apparatus on the top of the head. Only marine mammals such as whales, dolphins, and porpoi have a blow hole on their dorsal side of their body. Another difference from Cetacea is an otter's thick fur. I believe the ratio for pelt density is one million lock of fur per square inch. Otter fur is also much longer compared to that of other marine mammals like pennipeds. Their long fur makes otters especially susceptible to oil and oilspills resulting from underwater oil mining accidents.

Given the parents AABBCc × AabbCc, assume simple dominance for each trait and independent assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent? A) 1/4
B) 1/8
C) 3/4
D) 3/8
E) 1

Answers

The answer is C) 3/4

Let's analyze separately each of the traits:

Parental generation: AA x Aa
F1 generation: AA AA Aa Aa
So, all progeny will phenotypically resemble the first parent.

Parental generation: BB x bb
F1 generation: Bb Bb Bb Bb
So, all progeny will phenotypically resemble the first parent.

Parental generation: Cc x Cc
F1 generation: CC Cc Cc cc
Only 3 (CC, Cc, Cc) out of 4 progeny will phenotypically resemble the first parent.

The genotypes for first two traits will not affect phenotypical resemblance to the first parent. So, it only counts the third trait, for which the chance to have progeny that phenotypically resemble the first parent is 3/4.

To determine the proportion of progeny that will phenotypically resemble the first parent, we need to consider the inheritance of each trait independently. From this, the correct answer is option C) 3/4

Parent AABBCc can produce gametes with the following allele combinations:

ABc, ABc

Parent AabbCc can produce gametes with the following allele combinations:

aBC, aBC

When these gametes combine, the possible genotypes of the progeny are:

ABCaBC, ABCaBC, ABcaBC, ABcaBC

Among these genotypes, three out of the four have the same phenotype as the first parent (AABBCc). Therefore, the proportion of progeny expected to phenotypically resemble the first parent is 3/4.

Hence, the correct answer is C) 3/4.

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Which of the following body systems work together for support, protection, and movement? A. respiratory and cardiovascular
B. skeletal and muscular
C. skeletal and integumentary
D. digestive and respiratory

Answers

Answer:

Explanation:

The skeleton helps in support and movement...

hope this helps

Which energy transfer is least likely to be found in nature ? A- consumer to consumer
B- producer to consumer
C-host to parasite
D- predator to prey

Answers

The energy transfer that is least likely to be found in nature is predator - prey. Details about energy transfer can be found below.

How is energy transferred in nature?

Energy is transferred in nature when organisms feed on one another.

For example;

Producers, which are the initiator of the energy transfer are fed upon by consumers

Consumers like herbivores are also fed on by other consumers like carnivores

Parasitic organisms feed and derive nourishment from their host

However, the transfer of energy does not occur in the direction of a predator to prey but occurs the other way around.

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which energy transfer is least likely to be found in nature ?

D- predator to prey

after you cut out the drawongs of the rock layers how will u begin the process of sorting the layers by age

Answers

you carbon date them m8

Final answer:

To sort the rock layers by age, you can use the principles of relative dating and correlation, such as the law of superposition and the principle of original horizontality.

Explanation:

After cutting out the drawings of the rock layers, you can begin the process of sorting the layers by age by using the principles of relative dating and correlation. The first principle is the law of superposition, which states that the oldest rock layer is at the bottom and the youngest is at the top. The second principle is the principle of original horizontality, which states that layers of sediment are originally deposited horizontally. By examining the characteristics and relationships between the rock layers, you can determine their relative ages.

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Ecosystems usually become balanced by natural controls, including natural selection. A balanced ecosystem is one in which _____. the first organism on the food chain must outnumber the subsequent organisms on the food chain. there are an equal number of organisms at all levels of the food chain. the last organism on the food chain must outnumber the first organism on the food chain.

Answers

The right answer for the question that is being asked and shown above is that: "the first organism on the food chain must outnumber the subsequent organisms on the food chain." Ecosystems usually become balanced by natural controls, including natural selection. A balanced ecosystem is one in which the first organism on the food chain must outnumber the subsequent organisms on the food chain.

Answer:

the first organism on the food chain

Explanation:

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Plants produce glucose through the process of photosynthesis. Potato plants convert these glucose monomers into starch, a polymer made up of many glucose molecules bonded together. The starch is then stored in special root tubers called potatoes. What process do potatoes use to convert glucose into starch?

Which of the following is an example of an exothermic process?Melting Boiling Freezing Evaporating

Complete the chart please. asap thank you.

6. In an ecosystem, sometimes more than one animal is a predator to the same animal. For example, the great barn owl and the the bald eagle both share a habitat, and they both hunt mice. Which answer explains how this relationship can work? a. They are both hunted by the red fox. b. The eagle migrates to other ecosystems. c. The owl hunts at night, and the eagle hunts during the day. d. There is an overpopulation of owls.