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Marianna [84]
2 years ago
13

Neurospora crassa was one of the first eukaryotic microbes to be adopted by geneticists as a model organism. It is a haploid fun

gus (n = 7) found growing on dead vegetation. When an assexual spore germinates, it produces a tubular structure that extends rapidy by tip growth, and throws off multiple side branches. The result is a mass of branched threads called hyphae, which consitute a colony. a) Give two reasons why Neurospora crassa lends itself well to its use as a model organism. b) Two albino strains of Neurospora crassa were isolated. When either one was mated with wild type (pink), it produced ½ albino and ½ wild-type. What can you deduce about the mutations on each of the albino strains? Your Answer:
Biology
2 answers:
Free_Kalibri [48]2 years ago
8 0

Answer:

a) Neurospora crassa lends itself well to its use as a model organism due to this two reasons:

-It is asexual.

It can reproduce in the absence of a partner. This characteristic nature makes it inexpensive to use.

-It shows rapid growth rate.

This nature makes it easy to study how it reproduce and its mutations without the need to wait a prolonged time for the maturation of offspring.

b) we can deduce about the mutations on each of the albino strains as each one of it is a singular gene mutation. Multiple gene mutations will lead to reduced wild type progeny.

Anna007 [38]2 years ago
6 0

Answer:

A) They have low-maintenance and are easy to keep track of for mutations.

B) The deduction can be "Single Gene Mutation"

Explanation:

After examining the example given in the question on Neurospora crassa and the details about how they reproduce, the following points can be made regarding the questions;

A) It is stated that they form a colony in time and that they are asexual spores and the first reason to choose them would be because they contain somatic cells (which refer to the cells other than reproductive cells) and non-motile gonidia which can multiply by dividing themselves and these properties make the colony's maintenance easy. And since they multiply by division, it is easier to keep track of the occuring mutations.

B) Given the information in the question that the mating is between an albino strain and a wild type, and then between two albino strains which have the same genotype. The results indicate that the strains have gone through single gene mutation during the process.

I hope this answer helps.

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Ent var
jok3333 [9.3K]

Answer: Oxygen

Explanation:I hope it helps . i have breifly explained it .

Oxygen gas is one of the products of photosynthesis.

Which reactant is the source for oxygen gas and how is it released?

A .

Water, released when sunlight splits it into oxygen and hydrogen ions

B .

Glucose, released when glucose is broken down into carbon dioxide gas, oxygen gas and water

C .

Carbon dioxide, released when sunlight splits it into carbon and oxygen gas

D .

Electrons, released when they strike the chloroplasts

Green plants capture energy and convert it into chemical energy by the process known as photosynthesis. During photosynthesis, carbon dioxide and water are transformed into simple carbohydrates and oxygen is liberated into the atmosphere.

light

6CO2 + 12H2O ----------------> C6H12O6 + 6O2

chlorophyll

Water is also used as a source of hydrogen required for reduction of carbon dioxide to form carbohydrate.

Water is oxidised in presence of light and chlorophyll. Hydrogen is removed from water and oxygen is released as follows:

light

4‎H20 ---------------> 2‎H20 + 4H+ + 4e− + O2

chlorophyll

or,  

2‎H2O ----------------> 4H+ + 4e− + O2

Hence the source for oxygen gas is water and it is released when water splits in the presence of sunlight into oxygen and hydrogen ions.

So, the correct answer is 'Water, released when sunlight splits it into oxygen and hydrogen ions'.

4 0
3 years ago
The Paramecium is an aquatic, single-celled organism. What is a challenge of homeostasis for this organism?
Reil [10]

Answer:

I think it is the second option, maintaining a stable size and shape

Explanation:

I hope this helps, please give me brainliest

8 0
2 years ago
What creates a positive charge inside the cell during a nerve impulse?
sergejj [24]

Answer:

a gated sodium channels open and sodium ions flood into the cell

8 0
3 years ago
Most adult humans consume about 2000 cal of food energy each day. What might happen to the energy firm this food?
kirill115 [55]

Answer:

The energy which is taken by consuming food to perform different functions such as movement, exercise, breathing and thinking etc.

Explanation:

The energy from the food is released in the process of respiration. In respiration, energy is released in the form of ATP due to the breakdown of glucose molecules in the mitochondria of the cell. This energy is used by the body in different activities.

8 0
3 years ago
PLEASE HELP!! (Answer appropriately) USE ARROWS
horrorfan [7]

Answer:

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4 0
2 years ago
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