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olga nikolaevna [1]
3 years ago
5

About fifty thousand years ago ______ formed meteor crater

Biology
2 answers:
emmainna [20.7K]3 years ago
6 0
Answer to this question is d because erosion does not form meteor crater‘s neither does glacitations or earthquakes because earthquake split up the place in half or quarters and astroid are the only things that can make a meteor crater
bixtya [17]3 years ago
3 0
D. an asteroid because an asteroid is the only thing that can form a meteor crater. 
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In the parental generation, inbred black and an albino mice parents mate. The resulting F1 mice are black and heterozygous at 2
Semenov [28]

Answer:

12:4:3

Explanation:

Let the lack of color pigmentation which is recessive be aa where AA and Aa allow for color (BB, Bb - black, baby - white).

The F1 parents are BbAa x BbAa

This cross will produce 12/16 blacks, 4/16 albinos and 3/16 white.

7 0
3 years ago
A. E. coli is able to use foods other than glucose in the absence of available glucose, because falling levels of glucose cause
Gnom [1K]

Answer: D) cAMP

Explanation:

In the absence of glucose cell can make use of other sources of carbohydrates such as lactose. In E. Coli and other bacteria utilization of lactose depends on the availability of cAMP. Bacteria accumulate cAMP only when starved. When glucose is exhausted, cAMP is available in plenty.

cAMP is necessary for the gene expression because it binds catabolite repressor protein (CAP) to form CAP-cAMP complex. CAP is a lac repressor the binds to the operator site of the lac operon preventing RNAP From binding to the promoter.

RNA polymerase can bind to the promoter site only when CAP-cAMP formed

3 0
3 years ago
By the end of prophase, each of the following has occurred except ____.
Sergio [31]

Answer:

<em>D) lining up of chromosomes in the cell</em>

Explanation:

Prophase can be described as the first stage of cell division. During this phase, The chromatin material condenses and becomes compact so that the chromosomes become visible. The nuclear envelope disintegrates and the nucleolus disappears. Hence, the choices mentioned in option A, B and C occur by the end of prophase.

Metaphase is the third phase of cell division. During this phase, the chromosomes line themselves in the centre of the cell. Hence, the lining of the chromosome does not occur by the end of prophase. This occurs during the third stage.

8 0
3 years ago
_______ is the analysis of scientific data to predict likely future weather conditions.
777dan777 [17]
Meteorology or maybe weather forecasting
5 0
3 years ago
If two recessive alleles are present the __________ trait will be expressed.
Alexxx [7]
If two recessive alleles are present the Recessive trait will be expressed. 
5 0
3 years ago
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