What are the letters that make up the 4 bases in dna?.

True or false? plague is endemic in wild rodent populations in the southwestern united states.

nirvana33 [79]

The plague is endemic in wild rodent populations in the southelwestern united states so it's true.

8 0

3 years ago

I NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

blsea [12.9K]

Answer:

I believe Mac should increase the tilt.

Explanation:

6 0

3 years ago

Does the symbol NA+ represent a sodium atom that has lost an electron

Shtirlitz [24]

Yes, when you see that plus sign on the top right corner of an element, it means it lost one electron, making the element a slightly more positive charge, (called a cation).

8 0

3 years ago

What is the term used to describe the energy of moving particles

Finger [1]

Answer:

Kinetic energy

Explanation:

Because the particles are moving, they have kinetic energy. The faster they move, the more kinetic energy they have. When an object is hot, the particles move faster.

8 0

3 years ago

New generations are better suited to their enviornment than the first generation what is this called

pochemuha

Explanation:

-This is called <u>descent by modification.</u>

Natural selection, mutation, genetic drift and gene flow lead to microevolution; over time, this is seen as changes to allelic frequencies within a population. In passing these genes from parent to offspring, more alleles, or variants are formed; these allow future generations to better exploit their environment in a process called descent by modification.

In Galapagos finches, ancestral population groups had widespread variation in beak morphology within a diverse population. Over time, their variation in beak sizes and shapes coincided with their niches and available food source; the finches which developed adaptations to their environment were more likely to survive and produce young; this was passed onto their offspring. Their specialized beaks allow them to adequately exploit the available resources, by utilizing the more abundant food source.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.

Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell. Crossing over, independent assortment, and random fertilization ensure genetic variation.

This variation refers to the genetic characteristics present within a species; they form new traits called alleles, which may confer adaptations that increase the fitness of a species, along with ensuring survival by conferring an advantage.

Additionally, natural selection, mutation, genetic drift and gene flow lead to microevolution; over time, this is seen as changes to allelic frequencies within a population. In passing these genes from parent to offspring, more alleles, or variants are formed; these allow future generations to better exploit their environment in a process called descent by modification.