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svlad2 [7]
2 years ago
6

How many variant gametes (in meiosis of a single cell) can be produced if we allow for crossing over on the longer of the two ch

romosomes? How many variants could be produced over time by a population of these cells undergoing meiosis and then fertilization?
Biology
1 answer:
Lena [83]2 years ago
3 0

Answer:

Human diploid cells have 23 pairs of chromosomes. Because of independent assortment during meiosis I, there are 223, or 8.4 million possible gametes that may be created even if crossing over didn't occur.

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Is facilitated diffusion passive or active
kirill115 [55]

Answer:

Damian here!(ノ◕ヮ◕)ノ*:・゚✧

Explanation:

Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins.

so its basically passive

Hope this helps? :))

3 0
3 years ago
Which is an organism that makes its own food?
Genrish500 [490]

Answer:

Autotroph

Explanation:

The definition of an autotroph is an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

6 0
3 years ago
Which event marks the beginning of the cambrian era?
Scilla [17]

Answer:

D) largest mass extinction event in Earth's history

Explanation:

The cambrian era started following the pre-cambrian extinction

5 0
3 years ago
How does the Richter scale measure an earthquake?
USPshnik [31]

Richter's original magnitude scale (ML) was extended to observations of earthquakes of any distance and of focal depths ranging between 0 and 700 km. Because earthquakes excite both body waves, which travel into and through the Earth, and surface waves, which are constrained to follow the natural waveguide of the Earth's uppermost layers, two magnitude scales evolved - the MB and MS scales.

The standard body-wave magnitude formula is

MB = log10(A/T) + Q(D,h) ,

where A is the amplitude of ground motion (in microns); T is the corresponding period (in seconds); and Q(D,h) is a correction factor that is a function of distance, D (degrees), between epicenter and station and focal depth, h (in kilometers), of the earthquake. The standard surface-wave formula is

MS = log10 (A/T) + 1.66 log10 (D) + 3.30 .

There are many variations of these formulas that take into account effects of specific geographic regions so that the final computed magnitude is reasonably consistent with Richter's original definition of ML. Negative magnitude values are permissible.

6 0
3 years ago
Read 2 more answers
A scientist injected some cells with a drug that blocked glycolysis after NADH was formed, but before ATP and pyruvate were form
Stels [109]

Answer:

The cell could not make ATP.

Explanation:

Glycolysis may be defined as the process in which a glucose molecule is broken down into the two molecules of the pyruvate. Pyruvate is used to produce energy through various pathways that depends upon the availability of the oxygen. However when the glycolysis in blocked and the pyruvate is not formed, then the cells would not be able to use either the fermentation or aerobic respiration or the perform citric acid cycle. So the cell does not make any ATP.

5 0
3 years ago
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