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3 years ago

What does a alligator, Florida panther, and manatee have in common

Biology

1 answer:

swat323 years ago

4 0

They all have backbones!

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22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit

mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square ( $X^2$ ):

$X^2$ = $\frac{(O - E)^2}{E}$ where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The $X^2$ is calculated thus:

Phenotype O E $X^2$

1 88 164.81 $\frac{(88 - 164.81)^2}{164.81}$ = 35.80

2 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

3 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

4 81 18.31 $\frac{(81 - 18.31)^2}{18.31}$ = 214.64

Total $X^2$ = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

$X^2$ tabulated = 7.815

The calculated  $X^2$  exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently. 

4 0

2 years ago

Which statement best summarizes "Save the Coral Reefs”?Coral reefs are a very important component of the ocean’s ecosystem becau

cupoosta [38]

Answer;

-Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. In fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. More must be done immediately to save the reefs.

Explanation;

-Coral reefs are important for many different reasons aside from supposedly containing the most diverse ecosystems on the planet.

-They protect coastlines from the damaging effects of wave action and tropical storms ( they provide a buffer, protecting our coasts from waves, storms, and floods, helping to prevent loss of life, property damage, and erosion) and also provide habitats and shelter for many marine organisms.

7 0

3 years ago

Read 2 more answers

Hi!:) can you please complete this for me? i’m a little confused.:)

Leya [2.2K]

1. The sun

2. Chemical energy

3. Photosynthesis

4. Store

5. release

6. Cellular respiration?

Last one I'm not 100% sure.

8 0

3 years ago

__________ rejects the ideas of individual freedom and equality, instead arguing that hierarchies of superior and inferior are i

KatRina [158]

Answer: Fascism rejects the ideas of individual freedom and equality, instead arguing that hierarchies of superior and inferior are inherent in all human relationships.

Explanation:

Government that plays a role like a one party dictatorship followed fascism. In fascism nation's rights come before the rights of an individual. Countries that followed fascism run by a centralized government headed by a dictator. Fascists governments try to control all aspects of life including work, school,social and family life etc. Fascism is much common and practiced ideology around the time of world war 2. Large numbers of people were killed, who either didn't like or oppose fascism. And even many people were killed in the war initiated by fascist governments.

3 0

3 years ago

How is the DNA is stored in a PROKARYOTIC cell.

garri49 [273]

Answer:

answer in explanation

Explanation:

found in a coiled loop floating in the cytoplasm in a region called the nucleoid

8 0

3 years ago