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Mars2501 [29]
3 years ago
9

A husband and wife have two sons. One boy has a straight thumb, while the other has a bent thumb. What causes this difference

Biology
2 answers:
OLga [1]3 years ago
5 0

Answer:

The boys have different alleIes

Explanation:

IVLA

vekshin13 years ago
4 0

The answer is; alleles


Most genes have various forms called alleles. In diploid organisms, most alleles are two located at the same loci in homologous chromosomes.  One allele is usually dominant over the other, meaning it makes the effects of the recessive allele. In some occasions, the recessive allele has disadvantageous traits and manifest when the individual is homozygous recessive.


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¿Que factores del medio ambiente afectan los tegidos de los seres vivos?​
slava [35]

Answer:

Penetración de luz, p. Ej. el plancton crece mejor en las capas superiores de agua debido a la mayor intensidad de luz.

Las corrientes transportan organismos. ...

La acción de las olas mueve y daña a los organismos.

El contenido de sal hace que los organismos se adapten al agua dulce o salada. ...

La concentración de oxígeno es menor.

Explanation:

espero que haya ayudado

4 0
3 years ago
Runoff that contains fertilizers can cause increased levels of nitrogen in the ocean. What is a possible result of these increas
Masteriza [31]

Answer:

Explanation:

Increased nitrogen level in ocean water can lead to excessive growth of aquatic plants in the ocean which in turn leads to high oxygen (dissolved oxygen) uptake by these plants when they decompose. The overgrowth of these plants also prevent light penetration in the ocean water. All these can affect other aquatic organisms particularly those that depend on these dissolved oxygen and/or light penetration (such as fish and crustaceans).

7 0
3 years ago
Close observation of the fruiting bodies of cup fungi (ascomycetes) shows that when asci of cup fungi forcibly eject their spore
sertanlavr [38]

Answer:

<em>d. enhances the ability of spores to penetrate the layer of stagnant or unmoving air above the fruiting body. </em>

Explanation:

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Spores produced by single ascus can not accomplish this by themselves. Thereby spores are emitted by asci groups.

Spores obtain the ability to penetrate the layer of stagnant or up-moving air above the fruiting body by being released by community of asci.

4 0
3 years ago
Read 2 more answers
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4 0
4 years ago
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What evidence did Wegener make use of to develop the theory of continental drift?
timama [110]

Hi There!

Question - What evidence did Wegener make use of to develop the theory of continental drift?

Answer - A. Similar fossils were found on different continents.

Why - The reason I say this is because when Wegener found this doscoverey he had proven his theory of continental drift.

Hope This Helps :)

4 0
3 years ago
Read 2 more answers
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