Biology Questions
Explore questions in the Biology category that you can ask Spark.E!
are attached both to the pial (outside) surface of the neural tube and to its ventricular (lumenal) surface
embryonic notochord, floorplate, and neural ectoderm, somites, produce the molecular signals that
Cells destined to become non-neural tissues (for example, melanocytes)
This mechanism is more important in smallpopulations
A segment of DNA that codes for a protein
Natural Selection is a process in which certain traits become more common or not. This is determined by the necessity of certain traits and the environment the species finds itself in. Natural selection only acts on existing traits because they are the traits active in a given species in a given environment.
saw from the tortoises that organisms can adapt to their environments. He learned from the finches that there is variation among a species in different environments.
What to use when finding dominant phenotype in population?
can aquired characteristics be passed down?
What equation to use when finding genotype frequency?
What equation to use when finding an allele frequency?
- progression: can progress to late stage disease disease affecting brain, nerves, eyes, heart, etc.- symptoms: can include dementia and blindness
- pre-term birth - intraterine growth retardation (babies born full-term)
- damage to brain and nervous system- learning and behavior problems- slowed growth and development- hearing and speech problemscan cause:- lower IQ- decreased ability to pay attention- underperformance in school
- placenta previa- placenta accreta- gravid (related to pregnancy) hysterectomy
- low social support- difficulties with pregnancy- mother of multiples (ex: twins, triplets)
1. cover up and use insect repellent2. remove standing water3. keep mosquitoes out of your home4. use condoms
- hepatitise B (HBV): get tested, vaccinate- influenza: vaccinate- zika virus: don't tavel to areas with zika, use condoms if your partner has lived in or traveled to an area with zika
- previous C section- previous surgery on uterus (ex: fibroids)- mother is greater than 35 years old- in vitro fertilization
- blood transfusion- hysterectomy- ventilation/temporary tracheostomy(hyesterectomy is higher than ventilation/temporary tracheostomy for severe morbidity)