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3 years ago

How is mRNA produced during the process of DNA transcription

Biology

1 answer:

qaws [65]3 years ago

5 0

Answer

During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.

Explanation:

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In beans the pod texture and growth form genes are located on different chromosomes. There are two varieties of beans in a farme

irina1246 [14]

Answer:

a. Genotype in F1 - TtBb

Phenotype in F1 - tough pods, bush-type growth

b. Proportion of F2 that are heterozygous for bush-type growth form = 5/8

c. Proportion of the F2 with tender pods = 1/4

d. Proportion of F2 that are heterozygous for growth form and have tender pods = 1/8

Explanation:

Since the two traits are located on different chromosomes, they will independently assort during gametes formation. T is dominant over t and B is dominant over b.

Two true-breeding varieties were crossed at the beginning of the program:

TTBB x ttbb

All F1 plants will have the genotype TtBb with tough pods and bush-type growth form.

Advancing the cross to F2:

TtBb x TtBb

Progeny

1 TTBB - tough pods, bush-type

2 TTBb - tough pods, bush-type

2 TtBB - tough pods, bush-type

4 TtBb - tough pods, bush-type

1 TTbb - tough pods, climbing-type

2 Ttbb - tough pods, climbing-type

1 ttBB - tender pods, bush-type

2 ttBb - tender pods, bush-type

1 ttbb - tender pods, climbing-type

<em>Proportion of F2 that are heterozygous for bush-type growth form = 10/16 = 5/8</em>

<em>Proportion of the F2 with tender pods = 4/16 = 1/4</em>

<em>Proportion of F2 that are heterozygous for growth form and have tender pods = 2/16 = 1/8</em>

7 0

3 years ago

An earthquake is the saking and trembling that results from movment of rock benath earths surface earthquakes most commonlz occu

serg [7]

This is the case since earthquakes form directly from tectonic plates. It happens when 2 tectonic plates pass by each other and causes fiction from the bumby sides of the plates

8 0

3 years ago

Temperature differences between

Galina-37 [17]

B causes all vegetation to freeze

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1 year ago

anne was just diagnosed with cystic fibrosis, a disease that is carried in an autosomal recessive pattern. neither of anne's par

Gnom [1K]

A parent with one non-functional copy of the gene is a carrier. Carriers for Cystic fibrosis will have no symptoms but they can pass the non-functioning gene on to their children.

<h3>What is cystic fibrosis?</h3>

Cystic fibrosis is a genetic disease and individual must inherit two non-functioning CF genes that is one from each parent to have CF. Both parents must have at least one copy of the defective gene and people who have only one copy of the defective CF gene are called carriers but they do not have the disease. Many couples who have a child with CF have no family history of cystic fibrosis

Cystic fibrosis affects cells that produce mucus, sweat, and digestive juices and also it causes these fluids to become thick and sticky. They block tubes, ducts, and passageways.

Symptoms include cough, repeated lung infections, inability to gain weight, and fatty stools. Treatments for this disease may ease symptoms and reduce complications.

To know more about cystic fibrosis, refer

brainly.com/question/25129734

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3 0

1 year ago

A zebra mussel is discovered in a lake in Pennsylvania for the first time. Why would this make an ecologist worried?

Anna71 [15]

If a zebra mussel is discovered in a lake in Pennsylvania, then the ecologist would be worried because it is an invasive species. The zebra mussel is native to Ukraine and Russia, but if it has been found in Pennsylvania, than it means that it has been introduced in this area. As an invasive species, the zebra mussel can be very dangerous for the native species in the lake. The invasive species usually are more competitive for food sources than the native species, manage to reproduce quicker, bring in diseases, and the native species tend to not have defense mechanisms for them. This leads to rapid decline or even extinction in the native species, while the invasive spreads out quickly and takes over, resulting in dramatic change in the whole ecosystem.

3 0

3 years ago