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german
3 years ago
6

In the California Mojave Desert, an energy company is building a large solar­power facility. It is expected to produce enough po

wer for 140,000 homes and also cut carbon dioxide emissions by 500,000 tons a year. The facility will be built on 4,050 acres of wildlife habitat, which is near a protected refuge for a species of desert tortoise. The decision to build this power plant is most likely based on
Biology
1 answer:
o-na [289]3 years ago
8 0

Several factors have been considered before the construction was started. This includes the wildlife in the area and certain precautions have been made for their benefit and protection. This part of the Mojave Desert was chosen because it has the best potential in absorbing the sun’s energy rays at anytime of the year thus giving the assurance that the solar power supply will be enough all year round.

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They were brought to Australia to assist the exploration of inland Australia.

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Chemical reactions within the body sometimes require special proteins called _____ to catalyze the reaction
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The answer is Enzymes! This is because the enzymes help recover from the reaction and were made to do just that!

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Gina's art teacher mixes 9 pints of yellow paint with 6 pints of blue paint to create green paint.gina mixe 4 pints of yellow pa
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So the teachers ratio was 9 yellow: 6 blue,  which can be simplified to 3 yellow :2 blue
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Jamal investigates several interactions among organisms in a woodland ecosystem. He observes that coyotes hunt and kill white-ta
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C. They have different niches in the same habitat

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3 years ago
Đem giao phấn giữa hai cây bố mẹ đều TC thì được F1 xuất hiện một khiểu hình . Tiếp tục cho F1 tự giao phối với nhau thì thu đượ
seropon [69]

Answer:

Đưa về tỉ lệ kiểu hình ta được:

F1 x F1 => F2:

\frac{711}{79}

cây cao, quả đỏ:

\frac{240}{79}

cây cao, quả xanh:

\frac{238}{79}

cây thấp, quả đỏ:

\frac{79}{79}

cây thấp, quả xanh.

Explanation:

<=> 9 cây cao, quả đỏ: 3 cây cao, quả xanh: 3 cây thấp, quả đỏ: 1 cây thấp, quả xanh.

Xét từng cặp tính trạng:

* Cặp tính trạng chiều cao:

Cao: Thấp = 3:1 => tính trạng thân cao trội hoàn toàn so với thân thấp.

* Cặp tính trạng màu sắc quả:

Đỏ: Xanh = 3:1 => tính trạng quả đỏ trội hoàn toàn so với quả xanh.

Qui ước gen:

A: thân cao                     a: thân thấp

B: quả đỏ                        b: quả xanh

Lấy tích cả 2 cặp tính trạng: (3 cao: 1 thấp)(3 đỏ: 1 xanh) = 9 cao, đỏ: 3 cao, xanh: 3 thấp, đỏ: 1 thấp, xanh => tỉ lệ bằng với tỉ lệ đề bài => 2 cặp gen qui định 2 cặp tính trạng di truyền theo qui luật phân li độc lập.

Suy ra kiểu gen:

- Ở cặp tính trạng chiều cao có tỉ lệ kiểu hình 3 thân cao: 1 thân thấp => bố mẹ F1 phải cho 2 giao tử và mang gen a.

=> F1 x F1 = Aa x Aa. (1)

- - Ở cặp tính trạng màu sắc quả có tỉ lệ kiểu hình 3 quả đỏ: 1 quả xanh => bố mẹ F1 phải cho 2 giao tử và mang gen b.

=> F1 x F1 = Bb x Bb (2).

Từ (1) và (2) => Bố mẹ F1 phải có kiểu gen AaBb x AaBb.

Vì đem lai 2 bố mẹ thuần chủng nên ta sẽ có 2 trường hợp.

Trường hợp 1:

P: AABB x aabb

G: AB       ; ab

F1: 100% AaBb.

Trường hợp 2:

P: AAbb x aaBB

G: Ab     ;  aB

F1: 100% AaBb

6 0
3 years ago
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