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dangina [55]
3 years ago
13

And example of need is

Biology
2 answers:
BigorU [14]3 years ago
7 0
Goods or services that are required.
SIZIF [17.4K]3 years ago
7 0

Answer:

Something that is required to survive.. Example below

Explanation:

An example of a need is <u><em>a drink of water. </em></u>

1. the latest cell phone

2. an extra pair of jeans

3. a video game

<em>4. a drink of water</em>

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Write three sentences that help explain why the frequencies of tusklessness in male and female tend to differ. Each sentence sho
UNO [17]

Complete question:

In the attached files

Answer:

  1. Increasing uncontrolled poaching acts as some kind of <em>"selective pressure"</em>.
  2. Animals that carry the genes to grow tusks are removed from the population, and most of the surviving animals are those that do not have tusk and that carry the gene for tusklessness.
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4 0
3 years ago
What membranes lines the cavities and tubes in the digestive and respiratory system
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3 years ago
Una mujer lleva en uno de sus cromosomas X un gen letal recesivo (l), y en el otro alelo dominante normal (L). ¿Cuál es la propo
nlexa [21]

Question in English:

A female carries a recessive lethal gene (l) on one of her X chromosomes, and a normal dominant allele (L) on the other. What is the sex ratio to be expected in this woman's dependency if she marries a normal man?

Answer:

2/3 females

1/3 males

Explanation:

Females have two X chromosomes (XX) and males have an X and a Y chromosome (XY).

The genotype of the female is XLXl. The genotype of the male is XLY, since he is normal.

The possible genotypes are:

<u>                            XL                  Xl</u>

<u>XL</u>                     <em>XLXL             XLXl</em>

<u>Y</u>                       <em>XLY               </em><em>XlY</em>

<em />

All female offspring will be normal as they will always have one normal copy of the X chromosome from their father.

50% of the male offspring will be normal, but 50% will inherit the lethal gene from their mother.

Because the allele is lethal, that means XlY males will not be born.

That means 2/3 of the children will be females, and 1/3 will be males.

8 0
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