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stiks02 [169]
3 years ago
6

Many scientist believe that dinosaurs became extinct due to

Biology
2 answers:
valina [46]3 years ago
8 0
Many scientists believe dinosaurs became extinct due to:


It’s widely acknowledged that the Earth was a cold, dark place after a giant meteor, measuring roughly six miles across, struck Mexico about 66 million years ago, which many believe triggered what is known as the end-Cretaceous mass extinction.
goldfiish [28.3K]3 years ago
7 0

Answer:

The correct answer would be mass extinction due to meteor collision.

Explanation:

There are many different theories about the extinction of the dinosaurs. But many suggest extinction occurs due to meteor or asteroid collision. They believe that 65 million years ago an asteroid or meteor collided with earth and a huge amount of dust and debris covered global climate and environment. Due to this sunlight was not able to come to earth that is important for all the cycles and also primary source of energy for any ecosystem which ultimately lead to famous mass extinction.

Thus, the correct answer would be mass extinction due to meteor collision.

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2. How has genetics, combined with<br> paleontology, added to our<br> understanding of evolution?
motikmotik

Answer:

To find the extinct species and their divergence of characters can be studied using molecular genetic techniques.

Explanation:

  • Paleontology is the study of ancient species and their remaining that were found millions of years ago. These species extinction can be found and manipulated to find out the origin or divergence of species from their origin
  • The samples of these species may contains their remains that help the biologist to isolate and analyze their protein or DNA. when the DNA is isolated their sequences can be generated using molecular biology techniques.
  • When the sequences are identified by advanced molecular biology techniques, the existence and similarities of different species due to their convergence or divergence can be identified.
  • By identifying the convergence or divergence the characteristics, evolutionary change in behavior, variation in appearance can be studied.
  • By using these techniques, biologist have found that <em>homo sapiens</em>  are 99% have their similarities with chimpanzee
  • Thus, using genetics in paleontology helps us to understand adaptation a species is changing according to the evolutionary changes.

6 0
3 years ago
A classmate states that animals that result from artificial selections are lucky since they have better traits than bred animals
Delvig [45]

Answer:

See answer below. Hope it helps.

Explanation:

This can have advantages and disadvantages. The artificially selected animals could have better traits than naturally selected animals, but in the long run, it will be harder for them to evolve and adapt to new environments because of the lack of variation in their traits.

3 0
2 years ago
Round seeds are dominant over wrinkled seeds in
antoniya [11.8K]

Genotype - RR - 25%, Rr - 50%, rr - 25% (1:2:1)

Phenotype - Round seeds - 75%, Wrinkled seeds - 25% (3:1)

<h3>How explain your answer?</h3>

Let the letter "r" stand for the alleles, where R is round seeds and r is wrinkled seeds. A genotype is an individual's genes represented through alleles. Phenotypes are how the genes express themselves. In other words, genotypes will be written using letters, the alleles, and phenotypes will be the possible outcomes of the alleles.

Both of the parent seeds have the genotypes Rr and the phenotype of round seeds.

If you create punnet square (which had four boxes in total) 1 will have RR, 2 will have Rr, and 1 will have rr. These are the ratios for the genotypes. Each box represents 25%, so the percentages will be 25, 50, and 25. Finally, 3 of these boxes (RR and Rr) will result in round seeds because those are dominant. Only the genotype rr will result in wrinkled phenotype. Therefore, the ratio is 3:1 or 75% to 25%.

Thus, this could be the answer.

To learn more about genotypes and phenotypes click here:

brainly.com/question/20730322

#SPJ1

5 0
2 years ago
What does an epidermis look like
svp [43]
Your outer skin is your epidermis, so just look at your arm
8 0
3 years ago
Define Electricity
aev [14]

Answer:

To back away

Explanation:

To back away because magnets are different and is they are put the wrong the way it moves back

8 0
3 years ago
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