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Anna11 [10]
3 years ago
10

Give one example of how natural selection can change the distribution of a trait

Biology
1 answer:
Andrej [43]3 years ago
5 0
An example is sexual dimorphism<span>. This refers to differences between the phenotypes of males and females of the same </span>species<span>. In humans, for example, males and females have different heights and body shapes.</span>
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Is the only metal that is not solid at room temperature.
11111nata11111 [884]

Answer:

I believe it's Mercury.

Explanation:

Hope my answer has helped you!

8 0
4 years ago
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Match each organism with its phylum Pines Ephedra Palm-like plants Trees with fan-shaped leaves A. Gnetophyta B. Ginkgophyta C.
solong [7]

Answer:

Ginkgophyta

Explanation:

Gymnosperms are cone-bearing trees or Woody plants, which do not different greatly in their structure from the Woody angiosperms. Gymnosperms do not produce flowers but as seed plants that bear their seeds on scale-like leaves which are arranged spirally to form cones. The seeds are termed naked seeds because they are exposed to the air on the surfaces of the cone scales.

Gymnpsperms are grouped into four major divisions namely:

*Ginkgophyta

*Cycadophyta

*Corniferophyta

*Gnetophyta

1)DIVISION GINKGOPHYTA:The ginkgo tree cared maiden hair is the only surviving member of this division. It is found in the Orient(China and Japan) where it is cultivated as an ornamental tree because of the fan-like leaves. The leaves are *fan-shaped* with long petrioles.

2)DIVISION CYCADOPHYTA:The cycads abound in the tropics, mainly as ornamental plants. They are *palm tree-like* plants with a crowded crown of palm fronds.The leaves of Cuba's are deep green,waxy with large petioles.

DIVISION CONIFEROPHYTA:This is the largest group of Gymnosperms as it includes some of most economically exploited plants such as *pines* and Jupiter's. The pine tree is important as Christmas tree and conifers are generally important in the production of wood and paper

DIVISION GNETOPHYTA:This is the group of very unique Gymnosperms made up of three genera:Gnetum,*Ephedra* and Welwitschia.

Ephedra is a profusely branched shrub found in desert regions. It has whorl-like, scale-like, or needle -like leaves and jointed stem.

Hence, matching each with its phylum, we have:

Gingkophyta:Fan-shaped leaves

Cycadophyta-Palm-like leaves

Coniferophyta:Pine

Gnetophyta:Ephedra

5 0
4 years ago
What are 5 potential jobs that a students of neurology can obtain?
Delvig [45]
The potential jobs are:
- Clinical research
such involved in the studies to invent new drugs to treat a certain type of illness
- Diagnoticians
Such as involved in determining what causes the patient's neurological related symtoms
- Cognitive neuroscientists
Involved in expanding the knowledge on how our cognitive functions could be associated with the brain's function
- NeuroSurgeon
Involved in surgeries that focused on inside the head area.
- Health adviser
Gives advice to people in maintaining their overall well being.

8 0
3 years ago
The evolution of lungs and gills, which developed to serve a similar gas-exchange purpose in distantly related organisms, is an
masha68 [24]

Answer:

A. Convergent evolution

Explanation:

If analogous or structurally different oragns performing similar function.. We call that convergent evolution.

3 0
3 years ago
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Durairajanayagam D, Agarwal A, Ong C. Causes, effects and molecular mechanisms of testicular heat stress. Reproductive biomedici
harkovskaia [24]

Temperature affects spermatogenesis, which functions best at body temperatures just a little lower than those.

<h3>Abstract:</h3>

To keep testicular temperatures below those of the body core, adequate thermoregulation is essential. The process of mammalian spermatogenesis and the resulting spermatozoa are negatively impacted by elevated testicular temperature. Therefore, sperm quality can be affected and the likelihood of infertility is increased by thermoregulatory dysfunction resulting in heat stress. This article reviews a variety of internal and external factors that may lead to testicular heat stress. We go into more detail on how heat stress affects the spermatogenesis process, the resulting epididymal spermatozoa, germ cells, and the alterations that result in the testis.

We also go over the chemical reactions of germ cells to heat exposure and potential processes, such as apoptosis, DNA damage, and autophagy, that could lead to heat-induced germ cell damage. Further explanation is provided for the intrinsic and extrinsic processes involved in the complex mechanism of germ cell death. These intricate apoptotic pathways ultimately result in the demise of germ cells.

Learn more about spermatogenesis here:

brainly.com/question/1594056

#SPJ4

3 0
2 years ago
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