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kati45 [8]
1 year ago
10

Now, suppose that the three tomato genes from Part A did not assort independently, but instead were linked to one another on the

same chromosome. Would you expect the phenotypic ratio in the offspring to change? If so, how?Which statement best predicts the results of the cross MmDdPp x mmddpp assuming that all three genes are linked?a. Lack of independent assortment means that you cannot predict the frequencies of phenotypes in the offspring.b. All eight possible phenotypes would occur in equal numbers in the offspring (1:1:1:1:1:1:1:1).c. All eight possible phenotypes could occur, but a greater proportion of the offspring would have the parental phenotypes.d. Only the parental phenotypes could possibly occur in the offspring.
Biology
1 answer:
suter [353]1 year ago
6 0

Answer:

c. All eight possible phenotypes could occur, but a greater proportion of the offspring would have the parental phenotypes

Explanation:

When genes are linked they do not assort independently. Instead, the alleles on the parental chromosome will have a tendency to migrate together to the same pole of the cell. To produce gametes with genotypes different than the parentals crossing over must happen between the genes of homologous chromosomes during meiosis. However, recombination is a rare event, so the recombinant gametes will be less frequent than the parentals (those that arise when no recombination occurs between genes) and for that reason a greater proportion of the offspring will have parental phenotypes.

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Autonomic centers in the ________ exert neural control over hormone secretion by the adrenal medullae. a) pineal gland b) pituit
frez [133]

Answer:

The correct answer will be option-E

Explanation:

The autonomic nervous system or ANS activity in the brain is mainly controlled and regulated by the hypothalamus structure. The autonomic centres of the hypothalamus control the hormonal secretion adrenal medulla like adrenaline and norepinephrine.

The secretion of the hypothalamus controls the activity of the vasomotor center which help maintain the blood pressure.

Thus, option-hypothalamus is the correct answer.

3 0
2 years ago
Describe how temperatures above 35 C most likely affect the structure and function of the starch synthase in the particular stra
arlik [135]

Answer:

- It is very likely that temperatures above 35°C will change the structural configuration of the enzyme, denaturing it and preventing it from performing its function.

- According to the information, the most probable consequences for this rice crop is that its starch content will be lower, compared to crops grown at optimal temperatures.

Explanation:

<u>The full question includes this statement</u>:

<em>A rice grain is a fruit that encloses a seed. Most of the dry mass of a rice grain is starch. In rice plants,  starch is produced by hydrolyzing sucrose and then linking the released glucose molecules together into  starch . The optimal temperature range for starch synthase activity in a particular strain of rice  is 27°C - 30°C. The optimal temperature range for sucrose synthase in the strain is 30°C - 35°C.</em>

One of the factors affecting enzyme activity is temperature, according to which an enzyme can make a reaction faster, slower or inhibit the activity of that enzyme.

For a grain of rice to acquire its starch content, the activity of two enzymes is required, sucrose synthase - to obtain glucose from sucrose - and starch synthase, to polymerize glucose into starch (see image).

<h3>In this case, how temperatures above 35°C most likely affect the structure and function of the starch synthase?</h3>

The temperature of 35°C is far above the optimum temperature required for the enzyme to act, so it is possible that a change in the structure of the enzyme will occur or that it will be denatured, preventing the starch synthase from performing its function. One consequence of this is a lower starch synthesis.

<h3>When the average temperature in the growing season is 33°C, what can be predicted about the consequences on the starch content in mature rice grains?</h3>

A temperature of 33°C is outside the range of starch synthase activity -even though it is optimal for sucrose synthase- which would decrease starch synthesis and, because of this, the rice grains in this crop would have less starch content.

Learn more:

Relationship between the reaction of velocity of an enzyme and temperature brainly.com/question/14198802

6 0
1 year ago
During strenuous exercise, anaerobic conditions can result if the cardiovascular system cannot supply oxygen fast enough to meet
GaryK [48]

Answer:

Glucose utilization would increase a lot.

Explanation:

Aerobic condition indicates the presence of large amount of oxygen in the body. Anaerobic condition means that the oxygen is limited or deficient in the body.

The muscle cells shows anaerobic condition during exercise and produces lactic acid. Since, the ATP demand is same in both the  aerobic and anaerobic conditions. This increases the demand of glucose in the body. Glucose utilization is increased to provide proper energy to the individual.

Thus, the correct answer is option (a).

4 0
1 year ago
Si Se Sumerge En Un Vaso De Agua Una Piedra, Un Bolígrafo Y Un Tajalapiz. ¿Que Sucede?.
Arturiano [62]

Answer:

Al introducir una piedra en agua, está se va al fondo del vaso, por que es más pesada que el agua

Al introducir un bolígrafo, este flota, por que es más liviano que el agua

Si se introduce en agua un tajalapiz se evidenciará un proceso de corrosión del metal

Debido a la reacción con el agua, sin embargo el efecto será más evidente si se agrega sal a la mezcla

5 0
2 years ago
Read 2 more answers
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Fofino [41]
Nucleus controls the cell, it tells the cell what to do, similar to a brain. Rough ER or Ribosome ER creates the proteins in the cell. Golgi Apparatus packages macromolecules like lipids and proteins for transport.
7 0
1 year ago
Read 2 more answers
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