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ella [17]
3 years ago
12

The process by which populations change over time is called

Biology
1 answer:
Anettt [7]3 years ago
4 0
Evolution, through natural selection
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Where was the ring necked pheasant imported from
Firdavs [7]

They were imported from China into the United States in 1881.

The first successful release was in Minnesota in 1916.

Hope this helps! :)

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3 years ago
what is the characteristic of a cell membrane that controls which substances can enter and exit the cell
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Answer:

selective permeability

Explanation:

The property or characteristic of cellular membrane to allow certain substances to pass through the cell is known as selective permeability. The movement of molecules and ions across the cell can be active or passive.

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2 years ago
What is a young, anucleate erythrocyte called?
VARVARA [1.3K]

The right answer is reticulocyte.

The reticulocyte is the cell preceding the erythrocyte stage in erythropoiesis. He is almost like her.

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7 0
3 years ago
The Karez well system _______.
Xelga [282]

Answer:

c. transported groundwater from a distance

Explanation:

3 0
3 years ago
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Use the mechanisms of meiosis to explain why most mules are sterile.
Tema [17]

Answer:

3. An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase

Explanation:

Mules are hybrids of a cross between a female horse and a male donkey. Horses contain 64 chromosomes while donkeys contain 63 chromosomes in their somatic cells respectively. This means that they each produce 32 and 31 chromosomes respectively during meiosis. A mule, hence, contains 32+31= 63 chromosomes in their somatic cells.

This chromosome number in mules are uneven for meiosis to occur because meiotic division requires that an even number of homologous chromosomes pair together in a process called SYNAPSIS during prophase I of meiosis I. This is impossible in a mule because of the uneven number of chromosomes in its cells.

Also, during metaphase of meiosis, the homologous chromosomes need to be properly aligned at the equator for separation to occur. This is also impossible in a mule considering the number of chromosomes that don't add up.

Due to this reason of unevenness in the number of chromosomes present in a mule, meiosis will not occur and if meiosis (gamete formation) does not occur, reproduction cannot take place. Therefore, the mule is a sterile species i.e. cannot produce offsprings via sexual reproduction.

4 0
2 years ago
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