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gladu [14]
2 years ago
11

Hemophilia is a disease that causes uncontrollable bleeding. If a father has it, all of his daughters will be carriers of the di

sease, and about half of his sons will have the disease.
Which macromolecule is involved in how hemophilia is passed from parents to their children?

- carbohydrate
- lipid
-Nucleic acid
- protein
Biology
1 answer:
Viktor [21]2 years ago
7 0

Answer:

Protein is the macromolecule that is involved in how hemophilia is passed from parents to children

Explanation:

Hemophilia A, also called factor VIII (8) deficiency or classic hemophilia, is a genetic disorder caused by missing or defective factor VIII (FVIII), a clotting protein. Although it is passed down from parents to children, about 1/3 of cases found have no previous family history.

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Given a population that contains genetic variation, what is the correct sequence of the following events under the influence of
GuDViN [60]

Answer:

2. A change occurs in the environment.

4. Poorly adapted individuals have decreased survivorship.

1. Well-adapted individuals leave more offspring than do poorly adapted individuals.

3. Genetic frequencies within the population change.

Explanation:

The natural selection theory was developed by Darwin to explain how evolution occur within a population. The environment is in constant state of changes and always select for organisms that are better adapted to it.

Poorly adapted organisms gradually reduce from the population as a result of decreased survival while well-adapted individuals multiply and contribute more to successive generation.

Well-adapted individuals pass on the adaptive alleles to their offspring, eventually leading to a change in gene frequencies within the population.

Hence, the sequence of events is 2, 4, 1 and 3.

8 0
3 years ago
Darker skin is more prevalent in high-UV areas. Dr. Nina Jablonski proposed a hypothesis to explain the selective pressure for d
skad [1K]

The answer is; the melanin in darkly pigmented skin protects DNA from UV radiation, and UV radiation can cause skin cancer

In Africa, due to its equatorial latitude location, receives direct sunlight at more or less 90 degrees most of the year. These highly concentrated rays increase the UV radiation exposure  that can cause damage to cell DNA. Selection pressure, therefore, favored individuals with high melanin concentrations that protect against UV. Therefore population evolved towards high melanin densities in the skin.


7 0
3 years ago
Which statements describe planetesimals? Select three options. They are the origins of planets. They formed from gas and dust. T
Anika [276]

A solid minute object that is said to come together for the formation of the planet and are believed to produce cosmic dust are called planetesimal.

The options that best describes the planetesimals are:

  • Option A. They are the origins of planets.

  • Option B. They formed from gas and dust.

  • Option D. They are believed to have developed in debris disks.

The descriptions can be explained as:

  • It is believed that planets formation occurred through planetesimals. The formation happened from gas, dust particles and debris.

  • By the process of accretion, the discs coalesced and became bigger and solid over time. This bigger mass started attracting other matters towards each other because of gravitational force.

  • This pull resulted in either breaking or creation a bigger mass of pieces known as planetesimals. The collision continued to become bigger and solid planets we know today.

Therefore, options A, B and D are correct.

To learn more about planetesimals refer to the link:

brainly.com/question/10337322

6 0
2 years ago
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What type of front would you expect to be associated with flooding? Why?
sasho [114]

Answer:a stationary front.

Explanation:

they allow repeated thunderstorms to move across the same area.

4 0
3 years ago
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if a homozygous red plant is crossed with homozygous white plant what could be the phenotype of the F1 generation
juin [17]

Answer:

Depends on the kind of interaction the alleles have with each other.

Dominant, co dominant or incomplete dominant

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3 years ago
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