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Roman55 [17]
3 years ago
7

Which of the following is NOT TRUE about Y-linked disorders?

Biology
1 answer:
Usimov [2.4K]3 years ago
4 0

Answer:

<em>The statement which is not true is C) They can affect males or females</em>

Explanation:

All the chromosomes in a person are known to be autosomal chromosomes except for the sex chromosomes. The sex chromosomes are of two types: Chromosome X and chromosome Y.

Both the sex chromosomes are X in females. Males have one X chromosome and one Y chromosome. The Y chromosome is shorter than the X chromosome. The Y chromosomes occur only in males. Hence, Y- linked disorders will affect only males. These disorders will never occur in females.

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If you wanted to demonstrate a first class lever system to your peers which Childhood toy would you use as a basis for your demo
seropon [69]

Answer: Option B.

A see saw, chin raise.

Explanation:

A lever is a machine that can rotate and consist of a beam which is pivoted to fulcrum.

There are three classes of lever, the first class lever, second class lever and third class lever. These three classes of lever are classified base on the positions of effort, fulcrum and Load.

In first class lever, fulcrum comes between the effort and load. Examples is scissors , see saw, pliers. This is because effort is applied on the one side of the fulcrum and load is on the other side. Therefore, the childhood demonstration of first class lever motion is see saw and chin raise.

In the second class lever, load come between effort and fulcrum e.g wheelbarrow, bottle opener.

In the third class lever, effort comes between fulcrum and load e.g hammer, broom.

3 0
3 years ago
How long does it take for a body to start decomposing
NemiM [27]

Answer:

24-72 hours after death

Explanation:

Hope this helps!

3 0
2 years ago
Human blood types are characterized by the presence absence of surface markers known as a tigers on the surface of red blood cel
zalisa [80]

Answer:

characterized by presence or absence of antigens

the blood types are A, B, O, AB

Explanation:

There are two antigens and two antibodies that are mostly responsible for the ABO types.  The specific combination of these four components determines an individual's type in most cases. Erythrocytes and serum were related to the presence of antigens on these erythrocytes and antibodies in the serum. these antigens  are A and B, and depending upon which antigen the erythrocytes express, blood either belonged to blood group A or blood group B. A third blood group contained erythrocytes that reacted as if they lacked the properties of A and B, and this group was later called "O" blood group. The fourth blood group AB, was added to the ABO blood group system. These erythrocytes expressed both A and B antigens.

Blood group   Antigen present on RBC    Antibodies in serum    Genotype(s)

      A                        antigen A                             anti-B                     AA or AO

      B                        antigen B                             anti-A                     BB or BO

      AB              both A and B antigen                 none                         AB

      O                           none                           anti-A and anti-B           OO

4 0
3 years ago
Short note sentence describe the terms pure culture and mixed culture​
yaroslaw [1]

Answer:

A pure culture consists of only one type of microbe while a  mixed culture has two or more than two microbes.

Explanation:

A pure culture consists of only one type of microbe.

While a mixed culture consists of more than one type of microbes. such cultures may comprise of different species of bacteria or a group of bacteria, viruses and other pathogens.

In mixed culture the microbe species living together may harm each other existence.

4 0
3 years ago
List two ways in which the biosphere would be impacted if there were no hydrosphere. Use complete sentences. ​
inn [45]

Answer:

The hydrosphere refers to the water on the earth crust. If there were no hydrosphere, we would not have lakes, oceans, rivers, or even a hose full of water.  

3 0
2 years ago
Read 2 more answers
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