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Anna11 [10]
1 year ago
13

A situation in which the coefficient of coincidence is greater than 1.0 would indicate that: A. no double crossovers were found

in the progeny of a testcross, even though some were expected based on probability. B. there were more double crossovers in the progeny than would be expected based on probability. C. the genes involved were actually assorting independently. D. the interference is high and one crossover suppresses the occurrence of a second one. E. double crossovers were found in the progeny of a testcross, but there were fewer of them than would be expected based on probability.
Biology
1 answer:
damaskus [11]1 year ago
3 0

Answer:

B. there were more double crossovers in the progeny than would be expected based on probability

Explanation:

Crossing over or recombination can be defined as the exchange of genetic material between homologous chromosomes during meiosis. Moreover, the coefficient of coincidence is the number of double recombinants found in the progeny. The coefficient of coincidence can be estimated by the following equation:  

Coefficient of coincidence  (COC) = ADRF / EDRF

where ADRF = Actual Double Recombinant Frequency

and  EDRF = Expected Double Recombinant Frequency

In the case above described, ADFR is higher than EDRF, and therefore COC will be higher than 1.

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An ecologist recorded 12 white-tailed deer, Odocoileus virginianus, per square mile in one woodlot and 20 per square mile in ano
Nuetrik [128]

Answer:

The population of white-tailed deer in the two habitats.

Explanation:

Population is defined as the number of individuals per unit area. The unit area can be per hectare, acre, meter square, square mile, or any other acceptable unit for measuring the area of land.

<em>The ecologists identified two different woodlots and counted the population of white-tailed deer in the two. He must have been interested in comparing the population of the animals in the two habitats.</em>

6 0
2 years ago
This glandular tissue resembles that of the salivary gland (clusters of zymogenic cells). What feature unique to the pancreas wo
leva [86]

Answer:

Seen on the explanation.

Explanation:

Glandular tissues are a mixture of both endocrine (ductless, hormones are secreted directly into the blood) and exocrine (have ducts, hormones are secreted into surfaces) glands.

The pancreas and salivary glands are both exocrine glands although the pancreas has an endocrine function via the islets of Langerhans, both aid in the digestion of food.

The pancreas lacks striated ducts and the intralobular duct is similar to the intercalated duct of salivary glands. It often has a collapsed lumens and the cells are cuboidal with little cytoplasmic staining in contrast to acinar cells.

The pancreas can also be distinguished from the parotid gland by the presence of the pancreatic islet (islets of langerharns) which has an endocrine function.

5 0
2 years ago
What is the reactant (substrate) in the reaction above? Select all that apply. H2O2 H2O O2 catalase
Snowcat [4.5K]

Answer;

- Hydrogen peroxide

Explanation;

-Enzyme catalase is a protein enzyme present in most aerobic cells in animal tissues. Catalase is present in all body organs being especially concentrated in the liver & erythrocytes.  The brain, heart, skeletal muscle contains only low amounts.

The substrate for the enzyme catalase is hydrogen peroxide. It catalyzes the decomposition of hydrogen peroxide to water and oxygen.

2H2O2 = 2H2O + O2

3 0
2 years ago
Read 2 more answers
2. Complete the paragraph on freshwater ecosystems by using the following terms: merge, mountain streams, oxygen, plankton, plan
VashaNatasha [74]

Answer:

Rivers often start from the mountain streams and contain high amounts of oxygen. Rivers and streams grow larger as these waters merge. Rivers pick up sediments from the land as they flow. Lakes support many varieties of organisms, including plants in shallow, open water and wetlands. In shallow water near shore, plankton is covered in water all or some of the time and are found along the edge of lakes and the floodplains of rivers. A deer is nibbling moss on rocks beside a river. Rivers are a major source of water for a variety of animals and plants.

Keywords

  • Mountain streams
  • Oxygen
  • Merge
  • Sediments
  • Plants
  • Wetlands
  • Plankton

Explanation:

Freshwater ecosystems are of great importance for the diversity of plants and animals; they are also of the utmost importance for people as they are used in various ways. There are differences between freshwater ecosystems and marine ecosystems; the latter cantains a large number of salts, while the freshwater ecosystem does not provide.

Freshwater ecosystems are made up of rivers, lakes, streams, among others.

<em>I hope this information can help you.</em>

5 0
2 years ago
June's daughter is 42 years old. She has always suffered from pre-menstrual syndrome (PMS) and is often "out of commission" for
weqwewe [10]

Answer:

The correct answer is A

Explanation:

Based on the information given in the question and based on the research results on reducing PMS symptoms, it is best to eat smaller portions and more frequently, reducing caffeine and alcohol consumption which in turn reduces stress, watch your salt intake and drink water to reduce bloating etc. So the answers given in the options b, c, d and e are not recommended. I hope this answer helps.

5 0
2 years ago
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