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3 years ago

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Which of the following is NOT a possible cause of conduction deafness?Select one:a. otitis mediab. middle ear infectionc. cochle

ar nerve degenerationd. impacted cerumen

1 answer:

Agata [3.3K]3 years ago

6 0

Answer:

b. middle ear infection

Explanation:

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rodikova [14]

Answer:

Please find the complete paragraph below; the missing words are inputed in bold.

Explanation:

One of the most important bioethical issues facing us today is the issue of _____EXTINCTION____or a loss of biodiversity

2. Defined as variation of life on Earth __BIODIVERSITY___is the number and relative abundance of different __SPECIES__.

3. It is estimated that there are as many as __8.7 million__ species in the world though as few as __2.3 million_have actually been identified.

4. As the human population grows and demands more resources, ___BIODIVERSITY_ is threatened.

5. Human activities contribute to habitat loss, especially in the world's coral reefs and tropical rain forests. As a result, some organisms face __EXTINCTION_or the death of their species

6. The growth of the __HUMAN___ population has destroyed up to 25% of _BIODIVERSITY__ and threatened another 30% statistics are similar for __ECOSYSTEM___ .

7. Humans also face __NEGATIVE___ consequences in that we are dependent on the ecosystem we are destroying for everything from food to raw material.

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3 years ago

A botanist studying the inheritance of flower color found that when she crossed the offspring of two pure-breeding flower lines,

Gemiola [76]

Answer:

This is known as incomplete dominance

Explanation:

The phenotype of a heterozygous organism can actually be a combination between the phenotypes of its homozygous parents.The heterozygous offspring and the incomplete dominance of the purple trait are a phenotypic intermediate between the parents

6 0

4 years ago

In beans the pod texture and growth form genes are located on different chromosomes. There are two varieties of beans in a farme

irina1246 [14]

Answer:

a. Genotype in F1 - TtBb

Phenotype in F1 - tough pods, bush-type growth

b. Proportion of F2 that are heterozygous for bush-type growth form = 5/8

c. Proportion of the F2 with tender pods = 1/4

d. Proportion of F2 that are heterozygous for growth form and have tender pods = 1/8

Explanation:

Since the two traits are located on different chromosomes, they will independently assort during gametes formation. T is dominant over t and B is dominant over b.

Two true-breeding varieties were crossed at the beginning of the program:

TTBB x ttbb

All F1 plants will have the genotype TtBb with tough pods and bush-type growth form.

Advancing the cross to F2:

TtBb x TtBb

Progeny

1 TTBB - tough pods, bush-type

2 TTBb - tough pods, bush-type

2 TtBB - tough pods, bush-type

4 TtBb - tough pods, bush-type

1 TTbb - tough pods, climbing-type

2 Ttbb - tough pods, climbing-type

1 ttBB - tender pods, bush-type

2 ttBb - tender pods, bush-type

1 ttbb - tender pods, climbing-type

<em>Proportion of F2 that are heterozygous for bush-type growth form = 10/16 = 5/8</em>

<em>Proportion of the F2 with tender pods = 4/16 = 1/4</em>

<em>Proportion of F2 that are heterozygous for growth form and have tender pods = 2/16 = 1/8</em>

7 0

3 years ago

Quantitative analytic methods are needed to determine _____.

Darya [45]

Quantitative analytic methods refer to methods used in analytical chemistry in order to determine the concentration or the moles of a certain substance in solutions. This includes finiding correct units. The most appropriate answer is a quantitative variable and this is the first choice; Quantitative analytic methods can help you determine or estimate the amount of poison in the blood (solvent).

8 0

3 years ago

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A group on the periodic table is best described as a

sdas [7]

It can also be called a column.

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3 years ago

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