Biology Questions
Explore questions in the Biology category that you can ask Spark.E!
What is the percentage of sperm in a sample?
On which day does the posterior neuropore close?
What is present in the 2nd week of development of extraembryonic cavity?
as you move down the heirachy what happens to the number of groups in each level
as you move down the heirachy what happens to the relationships between organisms as you move down
as you move down the heirachy what happens to the size of the group
what is the primary source of genetic variation?
36 days post-conception teratogen exposure can cause this. It is a gap or split in roof of mouth or palate - the most common (facial?) birth defect in the UK affecting 1 in 700 babies
After the first trimester, narcotics have fetotoxic effects, such as...
In the first trimester, oestrogens have fetotoxic effects, such as...
a congenital abnormallity where the aorta is attached to the righ ventricle and the pulmonary artery to the left ventricle (this is backwards and leads to two separate blood routes). It occurs with exposure to teratogens 34 days post-conception
Congenital malformation of the limbs that can occur with exposure to teratogens between 12 and 40 days post-conception
In the first trimester, diethylstilboestrol has fetotoxic effects, such as...
After the first trimester, warfarin has fetotoxic effects, such as...
How is paternal exposure to drugs or chemicals prevented from causing teratogenicity of the foetus?
abnormal congenital opening of the male urethra on the undersurface of the penis. Can occur with exposure to teratogen 84 days post conception
After the first trimester, antidepressants have fetotoxic effects, such as...
Normally helpful, but in pregnancy its guidance is limited and not very helpful
o Given for morning sickness in pregnancy o Fewer clinical trials in pregnant women o A long battle against drug company to get it taken off the market
In the first trimester, warfarin has fetotoxic effects, such as...