![subject](/tpl/images/cats/biologiya.png)
Scientists discovered a fossilized cockroach trapped in amber, which was supposed to be about 50 million years old. dna fingerprinting and comparison with today's living cockroaches revealed that modern cockroaches have certain additional genes which allow them to survive in today's colder climate. which of these could be the correct explanation for this discovery?
change in gene frequency of ancient cockroaches led to the evolution of modern cockroaches.
somatic modification in ancient cockroaches led to the evolution of modern cockroaches.
modification of all the genes of ancient cockroaches led to the evolution of modern cockroaches.
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 18:00
1. you serve a volleyball with a mass of 2.1 kg. the ball leaves your hand with a speed of 30 m/s. the ball has energy. calculate it. 2. a baby carriage is sitting at the top of a hill that is 21 m high. the carriage with the baby weighs 12 n. the carriage has energy. calculate it. 3. a car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. the car has . calculate it.
Answers: 1
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 19:30
Explain what is meant by a river’s load, and describe how the load is carried.
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 20:00
The cellular plasma membrane is selectively permeable, which means some materials move through it while others cannot. the movement of materials into and out of the cell is called membrane transport. this activity will you identify the different mechanisms of membrane transport
Answers: 2
You know the right answer?
Scientists discovered a fossilized cockroach trapped in amber, which was supposed to be about 50 mil...
Questions
![question](/tpl/images/cats/en.png)
English, 18.04.2020 08:14
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 18.04.2020 08:15
![question](/tpl/images/cats/biologiya.png)
Biology, 18.04.2020 08:15
![question](/tpl/images/cats/himiya.png)
Chemistry, 18.04.2020 08:15
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.04.2020 08:15
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
Health, 18.04.2020 08:15
![question](/tpl/images/cats/mat.png)
Mathematics, 18.04.2020 08:15
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 18.04.2020 08:16
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 18.04.2020 08:16