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Biology

1 answer:

Katyanochek1 [597]3 years ago

3 0

Answer:

biotic factors depend on abiotic factors for survival

Explanation:

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Which of the following is not an accurate portrayal of antisocial personality disorder?a.People with this disorder suffer little

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The correct answer is: d.Most people with this disorder are female.

Antisocial personality disorder - ASPD also called sociopathy is a personality disorder in which person doesn’t pay attention to the rights of others. The behavior of people with this disorder :

• Consistently not showing no regard for right and wrong,

• Ignoring the feelings of others,

• Antagonization and, manipulation,

• Not showing guilt or remorse .

Sometimes even destructive and criminal behavior might appear.

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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

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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. 

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Explain how two organisms can have the same phenotype but different genotypes. Give an example.

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Answer:

2 organisms can have the same physical traits but no matter what, every single living creature has different DNA. Like how twins can look the same but their DNA won't be exact.

Explanation:

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Which is an example of a negative effect of technology?

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Causes kids to not know how to communicate face to face

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