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RSB [31]
3 years ago
5

Scientists discovered a fossilized cockroach trapped in amber, which was supposed to be about 50 million years old. DNA fingerpr

inting 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?

Biology
2 answers:
mash [69]3 years ago
8 0

Answer:

Change in gene frequency of ancient cockroaches led to the evolution of modern cockroaches.

Explanation:

Please see the attachment

Ostrovityanka [42]3 years ago
4 0
Change in gene frequency of ancient cockroaches led to the evolution of modern cockroaches. 
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A remarkable fact about cells is that _____. different types have few similarities all types of cells are almost identical cells
Ulleksa [173]

Answer;

cells are very different but have similar properties

Explanation;

-Even though there are many different types of cells, they all share similar characteristics. All cells have a cell membrane, organelles organelles, cytoplasm, and DNA.  All cells are surrounded by a cell membrane, all cells contain organelles, all cells contain cytoplasm and all cells contain DNA.

-Cells may differ in their number such that some organisms are made of only a single cell while other organisms are made of billions of cells

8 0
3 years ago
Read 2 more answers
What are the four types of nitrogen bases of dna nucleotides? the four types of nitrogen bases of dna nucleotides are , , guanin
Triss [41]

Answer:

four types of nitrogen bases od DNA nucleotides are; Thymine, Adanine, guanine and cytosine

5 0
2 years ago
You are a molecule of water. Choose a starting
olya-2409 [2.1K]

Answer:

In water cycle, water evaporates from the sea and oceans in the form of water vapors due to the radiation of the sun. This evaporation in the ocean is the starting point of water cycle.

Explanation:

Water cycle is also called hydrological cycle. In this cycle , water evaporates from water bodies such as rivers, seas, ponds and oceans etc. Water is also evaporated from plant bodies in the process of both evaporation and transpiration. This water moves in the form of vapors and forms clouds. These clouds moves to the land and fall on the earth surface in the form of rainfall and snowfall. From there, this water moves to the oceans through lakes and rivers and repeat the cycle again.

5 0
3 years ago
If the speed of a player doubles (2x), his kinetic energy will​
SpyIntel [72]

Answer:

If you double the speed of an object, the kinetic energy increases by four times. The word "kinetic" comes from the Greek word "kinesis" which means motion. Kinetic energy can be passed from one object to another in the form of a collision.

Explanation:

The kinetic energy is proportional to the square of the speed, so doubling the speed increases the kinetic energy by a factor of 4.

8 0
3 years ago
Match the columns:
Galina-37 [17]

Answer:

I have matched them below

Explanation:

each of the columns have been properly matched below:

1. attaches bones to bones and muscles to bones = d. dense regular connective tissue

2. insulates against heat loss = a. adipose connective tissue

3. forms the fibrous joint capsule =

c. dense irregular connective tissue

4. makes up the intervertebral discs = g. fibrocartilage

5. composes basement membranes; a soft packaging tissue with a jellylike matrix = b. areolar connective tissue

6. forms the larynx, the costal cartilages of the ribs, and the embryonic skeleton = h. hyaline cartilage

7. provides a flexible framework for the external ear = e. elastic cartilage

8. provides levers for muscles to act on = i. osseous tissue

9. forms the walls of large arteries = elastic connective tissue

6 0
3 years ago
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