Biology Questions
Explore questions in the Biology category that you can ask Spark.E!
Within varied populations, those who have more inherited traits are more likely to...
During fertilization, what is the recombinant of alleles
Smallest unit can evolve from population, what is the next biggest unit
Natural Resources are limiting which enhances what
Isolated populations rarely interbreed which causes a variety of exchanging genes
What happens when relative frequencies of alleles in a population change over time
Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. Which of the following pieces of evidence, if true, would be cause for this reclassification?
If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, then what should happen in environments from which antibiotics are missing?
Where do most de novo mutations occur?
When did ammonites and non-avian dinosaurs go extinct?
What structure is under the neural tube?
Which layer are primary villi originated from?
Which layer is generated by the epiblast?
Which embryonic layer is in contact with parietal hypoblast?
At the eighth day of development the hypoblast consists of?
When does second meiosis of oogenesis occur?
Approximately how long after fertilisation occurs the first cleavage of the zygote?
The amniotic cavity is formed by cells of the?
On which day does the process of Allantosis begin?
What is the percentage of sperm in a sample?