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ella [17]
2 years ago
10

Both intrasexual and intersexual selection usually cause changes in phenotypes for males and little changes in female phenotypes

. Why is sexual selection usually strongest in the male of the species
Biology
1 answer:
saveliy_v [14]2 years ago
6 0

<em>The question is incomplete. Please read below to find the missing content.</em>

<em />

Selection is usually strongest in the male of the species. D) because sperm are small and plentiful, while eggs are large and energy-rich.

Phenotype refers back to the observable traits of an organism as a multifactorial effect of genetic trends and environmental influences. The organism phenotype includes its morphological, biochemical, physiological, and behavioral residences.

A person's genotype is their specific collection of DNA. extra especially, this term is used to refer to the two alleles a person has inherited for a selected gene. Phenotype is the detectable expression of this genotype – a patient's clinical presentation.

The sum of an organism's observable traits is its phenotype. A key difference between phenotype and genotype is that, even as genotype is inherited from an organism's parents, the phenotype isn't.

Both intrasexual and intersexual selection usually cause changes in phenotypes for males and little changes in female phenotypes. Why is sexual selection usually strongest in the male of the species?

a. Males are naturally more aggressive

b. Males have a smaller genetic component than females due to fewer X chromosomes

c. Males do not pass on their mitochondria and therefore have more invested in each individual mating event

d. Because sperm are small and plentiful, while eggs are large and energy-rich.

Learn more about phenotypes here brainly.com/question/902712

#SPJ4

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A product of the anterior pituitary gland that causes color changes in its target cells is ________. A. follicle-stimulating hor
Ludmilka [50]

A product of the anterior pituitary gland that causes color changes in it's target cells is melanocyte stimulating hormone (MSH) .

Hence the correct answer is option D .

<h3>What is the pituitary gland ? </h3>

Pituitary is known as the master gland of our body, because it controls and coordinates the development and functions of other endocrine glands. It is found in the base of the brain in a bony cavity called 'sella tursica' and is attached to the hypothalamus.

It has two parts - anterior pituitary ( also known as adenohypophysis) and posterior pituitary ( neurohypophysis).

<h3>What is anterior pituitary?</h3>

The anterior pituitary has two parts para distalis and pars intermedia. Of this , FSH, LH, TSH, ACTH etc., is released by pars distalis, and the only hormone from pars intermedia is the MSH .

  • FSH - Follicle Stimulating Hormone - Stimulates the growth of ovarian follicles for next menstrual cycle.
  • LH - Luteinizing Hormone - Induces ovulation of fully mature follicles and maintains corpus luteum.
  • TSH - Thyroid Stimulating Hormone - Stimulates secretions of  Thyroid gland.
  • MSH - Melanocyte stimulating hormone - acts on melanocytes ( cells with melanin, a pigment ) and regulates the pigmentation of the skin.

Hence from the above points ,we can conclude that MSH causes color changes in it's target cells.

So correct answer is option D .

To learn more about anterior pituitary :

brainly.com/question/14704975

# SPJ4

8 0
2 years ago
Fruit flies use the Z-W sex determination system<br><br> True or false
const2013 [10]

Answer:

The answer to this question is false

3 0
3 years ago
Read 2 more answers
1. If the beetle population moves into a new environment with dark soil and vegetation, what
tangare [24]
Natural Selection, Charles Darwin coined the term “survival of the fittest”
5 0
3 years ago
Please help with this will give brainliest
DochEvi [55]

Answer:

38. Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.

39. The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas

40. Without enough light, a plant cannot photosynthesise very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.

41. Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

PLEASE MARK ME AS BRAINLIST PLEASE

7 0
3 years ago
On a backpacking trip, Kenny hikes all day at a steady pace, covering 30 kilometers and burning 4000 Calories. At the school tra
emmasim [6.3K]

Answer:

A. If the aerobic pathway—cellular respiration—cannot meet the energy demand, then the anaerobic pathway—lactic acid fermentation—starts up, resulting in lactic acid buildup and "oxygen debt."

D. The rate of energy demand determines how the muscles will obtain energy, either from cellular respiration or from lactic acid fermentation if not enough oxygen is present.

Explanation:

It is important to consider that Kenny hikes all day but at a steady pace, whereas Janelle runs very fast. So Kenny's case, the supply of oxygen is sufficient to maintain aerobic respiration within the muscle cells. During this process only CO2, Water, and ATP are produced; therefore, there is no oxygen debt. We should keep in mind that the body shifts to anaerobic metabolism only when the supply of oxygen is limited.

In Janelle's case, running fast would need energy at higher rates and the supply of oxygen would not be sufficient to generate a high amount of ATPs. Therefore, to compensate for this deficiency, cells will start fermenting glucose to lactic acid and produce ATP and maintain energy demands. This lactic acid causes fatigue and this is why Janelle has aching and breathing hard. Breathing hard is also automatic reflux to inhale more oxygen and meet oxygen demands but even breathing hard would not be able to make it and the body will shift to anaerobic respiration automatically.

5 0
3 years ago
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