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3 years ago

If an image is too dark under high power what should you use to increase the light intensity

1 answer:

8 0

The answer is Condenser. It is a small non non-magnifying lens system that condenses light before it passes through the specimen. Concentrates light on the specimen. Located beneath the stage. First, the iris diaphragm creates an aperture that regulates the amount of light passing through the condenser and ultimately the ocular lenses.

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Which of these hypothetical scenarios are examples of pleiotropy?

SVETLANKA909090 [29]

Answer:

The correct answers are A and B.

Explanation:

Pleiotropy is defined as "when a single gene affects two or more phenotypic characteristic of an organism.". Phenotypic refers to the traits that can be physically observed or measured in an organism, for example height, hair color etc. So the examples of pleiotropy in the given options are in A and B which describe situations where one gene affects two or more phenotypic traits.

I hope this answer helps.

7 0

3 years ago

Choose all the answers that apply.

arlik [135]

Answer:

Option A, B, and C are correct

Explanation:

Incomplete dominance means that the trait represented by two alleles expresses themselves equally thereby hindering dominance of any of the allele completely.

Now,

Let us assume the allele of red petals be represented by "R" and the allele of white petals be represented by "r"

The pink flowers will have genotype "Rr"

Now if two pink flowers are crossed, the following offsprings are produced

Rr X Rr

RR, Rr, Rr, rr

Let us evaluate all the options one by one

a) Ration of pink flower to red flower ( Rr:RR)

There are 2 pink (Rr) flower and 1 Red (RR) , thus the ration of pink flower to red flower is 2:1. Option A is correct

b) one out of four offspring is white in color, therefore the % of white flower is

$\frac{1}{4} * 100\\= 25\\$ %. Option B is correct

c) Two pairs RR and rr are homozygous, thus out of four offsprings two are homozygous. Therefore %of homozygous flowers will be

$\frac{2}{4} * 100\\= 50\\$ %. Option C is correct

d) There are two heterozygous offsprings i.e Rr, therefore the % of heterozygous is $\frac{2}{4} * 100\\= 50\\$ %. Option D is incorrect

e) half of the flowers are hybrid. Therefore option e is incorrect

Therefore, Option A, B, and C are correct

4 0

3 years ago

Mechanical forces that produce tissue trauma would be classified as which type of cellular injury?

Dmitry_Shevchenko [17]

<span>physical agents are mechanical forces that produce injury or tissue trauma. some examples of this are extremes of temperature (burns and really deep cold), sudden changes in atmospheric pressure, radiation, and electric shock.</span>

5 0

2 years ago

What can regulate the functioning of a gene? A.)external environment

olasank [31]

The answer is D hope this helps

4 0

2 years ago

What is the general trend in climate (both temperature and precipitation) over the past 50 years for the city of Seattle? PLZ GI

Lisa [10]

From the books of Geography Seattle is well known for its rain and dark, gloomy skies, but it may surprise many how pleasant the weather can be, particularly during the summer months. Using data from meteorological services for the past 50 years, we can conclude that November through March brings cool temperatures, heavy cloud cover and rain falling on most days. The coldest month is January with average lows in the mid to upper 30s F (about 3°C). Weather is pleasant from April through October, with the best weather in July and August when highs average in the 70s and rain is uncommon. Skies are mostly clear and smog-free, though mornings can produce an on-shore flow resulting in low clouds and fog which typically burns off by mid-day.

7 0

3 years ago