What was discovered in the 1930s about genes that helped us understand evolution better.

Biology

1 answer:

CaHeK987 [17]3 years ago

6 0

The idea of crossing over or genetic variation occurs. please give this brainliest!

You might be interested in

Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have norma

Mama L [17]

<h2>The correct answer is : C.</h2>

Explanation:

According to the question, mating between two populations of Rhagoletis produce hybrid flies.
This means that the two population is present in the same habitat or locality, hence they are capable of coming in contact with each other and mate. Hence, the answer cannot be Habitat Isolation.
Mating produces hybrid flies. This is possible when the gametes (egg and sperm) of the two different populations are capable of capable of coming close to each other and undergoing fusion (fertilization). Hence, there is no Mechanical Isolation.
The zygote formed by the above fertilization is capable of developing into healthy hybrid flies with normal life span. Hence, Pre-zygotic Isolation is absent.
But the hybrid flies formed are sterile and not fertile, that is, they are incapable of producing viable gametes which can undergo fertilization and produce a new offspring.Therefore, the eggs laid by the hybrid flies hatch less often. Hence, there is existence of Reduced hybrid fertility.

8 0

3 years ago

Can someone help me with this question? Thank you!!

babymother [125]

Answer:18 kcal

Explanation:

Law of ecological pyramid - the production of organisms of each subsequent trophic level is always on average up to 10 times less than the production of the previous one

1800/10=180

180/10=18

6 0

2 years ago

Read 2 more answers

Briefly explain the relationship between cells, organs and tissues

Mazyrski [523]

Answer/Explanation:

Cells of a similar type are organized together to make tissues. Different types of tisues come together to perform a similar function as part of organs.

For example, take the organ the stomach. There are various tissues that make up the stomach, including, for example, mucosa, and muscle tissue.

The mucosa tissue of the stomach is made up of secretory cells such as parietal cells, which secrete hydrochloric acid, and foveolar cells which produce mucus that protects the lining of the stomach.

7 0

2 years ago

Why do producers remove carbon from the atmosphere?

ira [324]

The correct answer is b, photosynthesis.

3 0

3 years ago

The initial dose of theophylline for an adult is 0.8 mg/kg/hr for 12 hours. how many ml of an iv solution containing 800 mg per

Bas_tet [7]

If the patient weight is 250 lb and the doses are 0.8mg/kg/hour for 12 hours, then the total amount of theophylline needed would be:
250lb * 0.453592kg/lb* 0.8mg/kg/hr * 12hr= <span>1088.6208mg

If the solution contains 800mg of </span>theophylline for 100ml volume, then the volume needed would be: 1088.62 mg / (800mg/100ml)= 136.07ml

7 0

3 years ago