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What is the gestation period foe sandhill cranes?
Based solely on google searches, it appears the gestation period for sandhill cranes is about 30 to 32 days. They often lay 2 eggs (alternating days) and often only 1 is fertile. There are 2 eggs being watched now (5/22/2012) that were layed on or about 5/4/2012. Parents seem to work jointly on keeping nest high and dry as the nest is in a pond and it's the rainy season so nightly both birds work most the night adding to the nest base. Then one sits on the nest, the other gone somewhere. 30 days would be 6/4... so babies soon due!
What is the ''critical period in prenatal development?
The critical period in prenatal development refers to a specific time during gestation when an organism is most susceptible to the effects of certain external influences, such as environmental factors or teratogens. During this period, the developing organism is particularly vulnerable to disruptions that may lead to congenital abnormalities or developmental issues. It is essential for proper growth and development that this critical period is protected and supported.
What period of prenatal development lasts the shortest?
The germinal period is the shortest period of prenatal development, lasting approximately two weeks. This period begins at fertilization when the egg is fertilized by sperm and ends when the fertilized egg attaches to the uterine wall.
What is the unborn offspring in the early stages of development?
The unborn offspring in the early stages of development is called an embryo. This stage typically lasts from fertilization until around eight weeks of gestation.
What is a refactory period?
A refractory period is a period of time in which a muscle or nerve is unable to respond to a second stimulation, regardless of the intensity of the stimulation. This period is necessary to prevent sustained muscle contractions or nerve impulses, allowing the tissue to recover and reset before being stimulated again.
