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Effectus [21]
3 years ago
13

If plants disappeared how long would oxygen last

Biology
1 answer:
lisabon 2012 [21]3 years ago
6 0
I’d say probably about 1-4 weeks
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The inheritance of eye color in Drosophila is controlled by genes on each of the fly's four chromosome pairs. One eye-color gene
algol [13]

Answer:

F1 Females  - all wild type

F1 Males  - all wild type

F2 Females  -  - all wild type

F2 Males - 1/2 wild type, 1/2 vermilion

Explanation:

The wild-type allele (Xᵛ⁺) is dominant over vermilion (Xᵛ), which is a sex-linked trait.

Female flies have two X chromosomes, male flies have one X and one Y chromosome.

A homozygous wild-type female fly (Xᵛ⁺Xᵛ⁺) is mated with a vermilion male fly (XᵛY).

The female parent can only produce Xᵛ⁺ gametes.

The male parent can produce either Xᵛ or Y gametes.

When gametes from both parents fuse, the F1 offspring will have the genotypes Xᵛ⁺Xᵛ (females with wild type eyes) and Xᵛ⁺Y (males with wild type eyes).

The F1 females can produce Xᵛ⁺ and Xᵛ gametes. The F1 males can produce Xᵛ⁺ and Y gametes.

When the F1 individuals interbreed, the gametes combine to give rise to the F2 offspring. The possible combination of gametes that will give the different genotypes and phenotypes in the F2 are:

  • Xᵛ⁺Xᵛ⁺ females with wild type eyes
  • Xᵛ⁺ Y males with wild type eyes
  • Xᵛ Xᵛ⁺ females with wild type eyes
  • Xᵛ Y males with vermilion eyes

7 0
3 years ago
Name 3 similarities between Saturn and Venus
Tanya [424]

Answer:

All four planets: Mercury, Venus, Earth and Mars are inner planets or also referred as terrestrial planets. Those are the planets orbiting closest to the Sun.

Earth is the largest of the Inner Planets, with a diameter of 12,756 km and Mercury is the smallest with a diameter of 4,878 km (3,031 miles). They have solid surfaces and thin/no atmospheres. Mercury is one of the densest planets in the Solar System. Venus is the brightest object we see in the sky, has a thick toxic atmosphere and is the hottest planet. Earth is the only planet that has liquid water.Mars surface contains iron-rich materials and has the most interesting terrain: the surface is very old and filled with craters.

Explanation:

5 0
2 years ago
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Heat energy trapped by particles in the atmosphere warms the earth naturally through the
Molodets [167]
Through the process of global warming
5 0
3 years ago
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Which is a main princip of confucianism ap human geography?
GalinKa [24]
<span>A love for humanity, worship of ancestors, respect for parents, and harmony in thought/action.</span>
7 0
3 years ago
The somatic and autonomic nervous systems differ in all of the following EXCEPT ________. The somatic and autonomic nervous syst
valkas [14]

Answer: Regulation of activity by higher brain centers.

Explanation: The autonomic nervous system is part of the peripheral nervous system and is responsible for involuntary actions that occur without control, such as breathing and heart rate.

The somatic nervous system is also part of the peripheral nervous system but is responsible for the transmission of signals to the skeletal muscles and from receptors of external stimuli.

The peripheral nervous system regulates systems such as the nerves and ganglia that are found outside of the brain and spinal cord. Thus the autonomic and somatic nervous systems differ, but both are not involved in the regulation of activity by higher brain centers.

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3 years ago
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