Question 1: How do offspring resulting from sexual reproduction differ from offspring resulting from asexual reproduction?
Asexual reproduction involves a single parent. It results in offspring that are genetically identical to each other and to the parent. All prokaryotes and some eukaryotes reproduce this way. There are several different methods of asexual reproduction. They include binary fission, fragmentation, and budding. <u>AND</u> in in sexual reproduction, parents produce reproductive cells—called gametes—that unite to form an offspring. Gametes are haploid cells. This means they contain only half the number of chromosomes found in other cells of the organism. Gametes are produced by a type of cell division called meiosis, which is described in detail in a subsequent concept.
Question 2: How do DNA, chromosomes, and genes work as the instructions for heredity?
Each gene occupies a specific position on a chromosome. Because genes provide instructions for making proteins, and proteins determine the structure and function of each cell in the body, it follows that genes are responsible for all the characteristics you inherit.
Question 3: How do environmental factors and heredity affect personal health?
Heredity and environment interact to produce their effects. This means that the way genes act depends on the environment in which they act. In the same way, the effects of environment depend on the genes with which they work.
Hopes this answers your questions :)
Answer:
Option A) Simple Prokaryotes.
Explanation:
- The first life that existed on Earth was the single-celled microbes who lack a well defined nucleus and are known as Prokaryotes
- They existed on Earth for almost four billion years ago.
- In Prokaryotes "Pro" means before and "Karyon" means nucleus which means they lacked nucleus and many other cell organelles that complex structures have.
- They are single celled organism adaptive of living in earth older environment.
Result: Simple Prokaryotes was the first life on earth.
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Populations evolve, individuals do not. It is incorrect to say that individuals adapt to their environment because adaptation occurs as a result of random mutations. Changes in the individual during its lifetime, such as phenotypic plasticity, is not adaptation.
Explanation:
Human health ultimately depends upon ecosystem products and services (such as availability of fresh water, food and fuel sources) which are requisite for good human health and productive livelihoods. Significant direct human health impacts can occur if ecosystem services are no longer adequate to meet social needs.