Poems about heredity 1. Idioms, sayings and famous sayings about heredity

Dragon begets dragon, phoenix begets phoenix, and mice's children can make holes.

"The dragon gives birth to the dragon, the phoenix gives birth to the phoenix, and the mouse's son can make holes"-biological inheritance

This is biological inheritance and a common phenomenon in the biological world. The reason is that in the process of reproduction, parents accurately copy their own genetic material (DNA) and pass it on to their offspring, so that the offspring get the genetic material of their parents, thus showing similar characteristics to their parents. Because of the genetic characteristics of organisms, the offspring of each organism are basically the same as their parents, thus keeping the species in the biological world relatively stable.

"One mother gives birth to nine children, and even ten mothers are alike"-biological variation

This reflects the phenomenon of biological variation, which is caused by errors (changes) in the replication process of the parental legacy (DNA) or differences between individuals with different sex and offspring. There are both hereditary and non-hereditary S. If the variation is caused by environmental conditions, it cannot be inherited. Variation caused by changes in genetic material (DNA) can be passed down. Because of the variation characteristics of organisms, individuals can produce new characters and form new species.

"The mantis catches cicadas, and the yellowbird is behind"-the predation of creatures

means that the mantis is about to catch cicadas, but the yellowbird is about to eat it after it; It has the meaning of food chain in biology. The food chain implied by this proverb is: plants-) cicada+mantis+yellowbird. In this food chain, plants are the first trophic level of producers, cicada; Mantis and yellowbird are consumers, belonging to the second, third and fourth nutritional levels respectively.

The proverb "Two tigers are not allowed in one mountain"-the intraspecific struggle of organisms

reveals the phenomenon that organisms struggle for resources, food and space. Tigers are large carnivores, which are located in a higher trophic level. According to the one-way energy flow in the ecosystem, the transmission efficiency is only 1%~2%. The higher the trophic level, the less energy they get. In order to survive, there will be a life-and-death struggle, so there is no room for two tigers in one mountain.

"moths throw themselves into fire-biological stress

This refers to the reaction of insects to light, which is called phototaxis of insects. All organisms have stress, and stress refers to the characteristics of organisms responding to external stimuli. Because of the stress, organisms can react to the surrounding stimuli, so as to avoid unfavorable stimuli and adapt themselves to the surrounding living environment.

"Make a cocoon and bind yourself"-the relativity of biological adaptation

Silkworms spin silk and wrap themselves in it, and moths form cocoons; It is an adaptability to resist the bad environment and protect itself, but when it comes to the golden bee, the tragedy happens on the cocoon, and it is with the help of the cocoon that the golden bee turns cotton red; The binding effect of the bollworm successfully laid eggs in its body, so that the "cocoon" of the cotton bollworm turned into "self-binding". This shows that the adaptation of organisms to the environment is only to a certain extent, not completely and absolutely. Due to the constant change of environmental conditions, some characteristics will become unsuitable, which is the adaptive phase; Right.

"When a mouse crosses the street, everyone cries out"-biological competition

When a mouse destroys crops and steals food, everyone suffers: hate. Biologically, it is a competitive phenomenon of biological interspecific relations. The result of competition is often unfavorable to one party, or even eliminated. The closer the lifestyle, habits, habitats and food types between organisms, the more intense the competition.

"Once bitten by a snake, three years afraid of straw rope"-biological conditioned reflex

This contains biological conditioned reflex; Conditioned reflex is a physiological activity of higher animals and people, which is formed with the participation of cerebral cortex. This reflex improves the ability of animals and people to adapt to the environment.

"One side of water and soil breeds one side of people"-the relationship between living things and environment

Like other living things, people all live in a certain environment and have a very close relationship with the environment. On the one hand, living things have to constantly absorb matter and energy from the environment, so they are limited by the environment; On the other hand, biological activities can constantly change the environment. Biology and environment are a unified whole. We should not only see the impact of environment on biology, but also consider the impact and damage of biological activities on the environment, especially the damage and impact of human activities such as cutting down forests, reclaiming land from lakes, building industrial and civil facilities, etc. Only in this way can we maintain the harmonious development between human beings and the natural environment.

2. Sentences that describe a son who has his father's genes

1. Give the door away.

Definition:

Door: a family with generations as generals. Metaphor parents have talent, and children and grandchildren have extraordinary skills. It also means that the children of later generations do not disgrace the family.

Sentence making: He is tall and powerful, which really throws the door out of the tiger.

2. shine on you is better than blue.

Interpretation:

It first came from Xun Zi's "Persuade Learning". Xun Zi used indigo as a metaphor for a rising star who had made achievements in academics, and blue grass as a metaphor for their teachers or predecessors. Cyan: indigo, cyan pigment. Blue: Polygonum blue, a kind of grass that can extract pigments. Indigo is extracted from Polygonum cuspidatum, but its color is darker than Polygonum cuspidatum. Metaphor means that people can be improved after learning or education. It is often used to mean that students surpass teachers or future generations surpass predecessors.

Sentence: Our next generation will definitely be shine on you and better than Blue.

3. The waves behind the Yangtze River push the waves ahead, and each generation is stronger than the next.

Definition:

There are many talented people in different times, and later generations can always surpass their predecessors, just as the waves behind the Yangtze River push the waves in front.

Sentence making: Today's young people are really pushing the waves behind the Yangtze River, and each generation is stronger than the next.

3. In the following idioms or poems, the description of biological inheritance is () A. The mantis catches cicadas, and the yellowbird comes last. B. People

A. The mantis catches cicadas, and the yellowbird comes last. The mantis eats cicadas and the yellowbird eats mantis in order to get food to survive, which belongs to biological life and needs nutrition, so it does not meet the meaning of the question. B. In April, the world is full of flowers, and the peach blossoms in the mountain temple begin to bloom. "The environmental factor that causes this difference is temperature, which reflects the influence of temperature on living things, so it does not meet the meaning of the question; C, as you sow, you reap, which shows that parents and offspring have the same characteristics, so it belongs to heredity, so it conforms to the meaning of the question; D, "Qian Fan is on the side of the sinking boat, and Wan Muchun is in front of the diseased tree" embodies the biological principle of natural selection. The diseased tree is not adapted to the environment and is eliminated by the environment, but thousands of trees thrive in front of the diseased tree to adapt to the environment and survive, forming the scene of Wan Muchun. Therefore, it does not meet the meaning of the question. Therefore, C is chosen.