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Dimas [21]
2 years ago
10

carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. this special abil

ity allows carbon to do what?
Biology
1 answer:
vivado [14]2 years ago
3 0

Answer:

To form a wide range of compounds with other elements

Explanation:

The ability of carbon to gain four more electrons allows this chemical specie to form a wide range of compounds.

When carbon gains four electrons, it becomes isoelectronic with neon and then becomes a stable compound or molecule as it combines with other atoms.

This leads to the proliferation of carbon compounds that we find in nature. Carbon can easily for covalent compounds with other compounds also.

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In Drosophila, vestigial (partially formed) wings (vg) are recessive to normal long wings (vg+) and the gene for this trait is a
Marina CMI [18]

Answer/ Explanation:

a. The genotype of a homozygous white eyed long winged female would be Vg+Vg+XrXr. We denote the white allele as recessive (r) because the XY male only has one copy and yet has red eyes, so the red eye trait (R) must be dominant. A homozygous red eyed vestigial winged male would have be VgVgXRY. The possible gametes for the female are Vg+Xr only. For the male, the possible gametes are VgXR or VgY

The attached punnett square shows the results of the cross. The females will all be Vg+VgXRXr. The males will all be Vg+VgXRY (must inherit Y from father). That means they will all  have normal length wings, the males will have white eyes and the females will have red eyes.

b. The F2 flies arise from intercrossing the F1, so the cross will be Vg+VgXRXr x Vg+VgXRY. The possible gametes for the mother are: Vg+XR, Vg+Xr, VgXR or VgXr. The possible gametes for the father are Vg+Xr

, Vg+Y

, VgXr

, VgY

. The attached punnet square shows this cross. The ratio of the phenotypes will be 6:6:2:2, or 3:3:1:1 (long-winged red eye: long-winged white eye: vestigial wing red eye: vestigial wing white eye), genotypes shown in the attachment.

c. F1 cross back to the mother would be Vg+VgXRY x Vg+Vg+XrXr. The genotypes are shown in the attached punnet square. The offspring will all be long-winged with white eyes. The F1 to the father would be Vg+VgXRXr x VgVgXRY. The ratio would be 3:3:1:1 long-winged red eye: long-winged white eye: vestigial wing red eye: vestigial wing white eye

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7 0
3 years ago
What are invasive species?
yaroslaw [1]

A. Nonnative species that are superior competitors

8 0
2 years ago
Read 2 more answers
O que são elementos astronômicos visíveis?
Digiron [165]

Answer: Wo meiyou xiansuo

Explanation:

3 0
3 years ago
Which surface ocean current has the warmest water?
hjlf
The North Atlantic Drift has is one of the world's warmest waters.

<span>The North Atlantic Current, also known as North Atlantic Drift and North Atlantic Sea Movement, is a powerful warm western boundary current that extends the Gulf Stream north-eastward.
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!


4 0
2 years ago
Read 2 more answers
Un tractor tira de un remolque cargado sobre un camino plano libre de fricción, con una fuerza horizontal constante de 440 N. Si
Bogdan [553]

Answer:

1,6 m / s ^ 2

Explanation:

De las leyes de Newton;

Fuerza = masa × aceleración

masa = 275 kg

Fuerza = 440 N

Aceleración = Fuerza / masa

Aceleración = 440N / 275Kg

Aceleración = 1,6 m / s ^ 2

4 0
3 years ago
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