Answer:
Gene flow is the transfer of genes in and out of a population.
2. Geneflow affect the fitness ofva population.
Gene flow within a population can cause an increase in the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations.
Index fossil is any animal or plant preserved in the rock record of the Earth that is use to identify and gate geologic periods.
Explanation:
Gene flow is the transfer of genes or genetic variation in and out of a population.
Gene flow is cause by movement of organisms that reproduce in their new population or movements of gametes. For example, when bees carry pollen from a flower in one location to flowers in another location, the bees are causing gene flow.
Gene flow within a population can cause an increase in the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations. Thereby affecting it's genetic fitness.
Index fossil is any animal or plant preserved in the rock record of the Earth that is use to identify and gate geologic periods. Examples of index fossils include: Ammonites were common during the Mesozoic Era (245 to 65 mya
Answer:
Gina is correct.
Explanation:
The cell has no nucleus and there is a cell wall. This means that the cell must be bacterial.
Their biggest threats
The absence of an appropriate habitat for bees could lead to a continuous decline in pollination. Mono-cropping, pesticides, and higher temperatures associated with climate change all pose problems for bee populations and, by extension, the quality of food we grow.
The red blood cells able to move through narrow vessels to carry oxygen throughout a multicellular organism because they are small because they lack a nucleus. Option D
<h3>What are red blood cells?</h3>
The red blood cells are the ones that carry hemoglobin that is responsible for the transport of oxygen in the body. Now we know that the blood is responsible for the supply of oxygen across the body and this is why the red blood cells are important.
Thus, the red blood cells able to move through narrow vessels to carry oxygen throughout a multicellular organism because they are small because they lack a nucleus.
Learn more about red blood cells:brainly.com/question/17247203
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