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anastassius [24]
3 years ago
6

Which came first, bees or flowers (base of Era)?

Biology
1 answer:
Orlov [11]3 years ago
7 0
Studies of the similarity of the DNA in wasps and bees suggest that the first bees appeared about 130 million years ago, 50 million years before the first known fossil bee, and probably very shortly after the first flowers evolved in the Cretaceous.
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rabbits can have curly ears or long ears. a homozygous curly-eared rabbit mated with a homozygous long-eared rabbit. all the bab
charle [14.2K]
Long ears have to be dominant:

If this IS true then these would be your 'parents':

L = long ears
l = curly ears

LL x ll

If you cross the homozygous recessive curly eared rabbit (ll) with homozygous dominant long eared rabbit (LL) you would get 100% Ll - all would look long eared.
3 0
4 years ago
Describe wavelength, amplitude, and frequency in relationship to vision and hearing
artcher [175]

Explanation:

  1. Visual and auditory stimuli both occur in the form of waves. Although the two stimuli are very different in terms of composition, wave forms share similar characteristics that are especially important to our visual and auditory perceptions. Waveforms of different types surround us at all times, however we only have receptors which are sensitive to specific types of wavelengths. In this section, we describe the physical properties of the waves as well as the perceptual experiences associated with them.

AMPLITUDE AND WAVELENGTH

  • Two physical characteristics of a wave are amplitude and wavelength (figure below). The amplitude of a wave is the height of a wave as measured from the highest point on the wave (peak or crest) to the lowest point on the wave (trough). Wavelength refers to the length of a wave from one peak to the next.

 

The amplitude or height of a wave is measured from the peak to the trough. The wavelength is measured from peak to peak.

 

   Wavelength is directly related to the frequency of a given wave form. Frequency refers to the number of waves that pass a given point in a given time period and is often expressed in terms of hertz (Hz), or cycles per second. Longer wavelengths will have lower frequencies, and shorter wavelengths will have higher frequencies 

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3 years ago
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DNA sequencing can detect what?
STatiana [176]

Answer: Diagnosing or detecting diseases

Explanation:

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What had a nucleus ?
Ipatiy [6.2K]

Answer:

The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.

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Consider the diagram of an internal feedback mechanism that the body uses to help maintain homeostasis.
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In homeostasis the body has a target set point which it tries to maintain, with the use of the negative feedback loop the body strives to stabilize the internal environment by regulating the temperature of the body.

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