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Many of the 60 or more species of kangaroos can "pause" their pregnancy. This is called "embryonic diapause". The mother kangaroo spends most of her adult life pregnant, but in drought times, she has the ability to indefinitely "freeze" the development of the young embryo until food sources are replenished. This is one of the kangaroo's adaptations for living in a harsh country like Australia.
Wiki User
∙ 10y ago
Wiki User
∙ 10y agoThis is an automatic response to the external conditions, and is known as embryonic diapause.
Most kangaroos are able to breed all year round, but conditions will determine how often they reproduce. Female kangaroos can often be in a state of almost permanent pregnancy, with an embryo "suspended" until the mother's body is ready to release it - whether that be when another joey is sufficiently weaned, or feeding conditions have improved.
Embryonic diapause works by the embryo developing until the blastocyst stage, which is the stage just before implantation f the embryo occurs, and then waiting for particular signals from the uterus which will basically "give the go-ahead" for their further development. If these signals are not sent by the uterus, development of the embryo will stop. The signals are in response to environmental conditions, i.e.. whether there is enough food to support more joeys, or to the mother's own condition, i.e. is she healthy enough to support the growth of another joey, and is the previous joey ready to be weaned? put simply, these signals are sent by the mother's body, according to what her hormones are doing.
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Can you have pregnancy symptons and not be pregnant?
i have three times noticed that i have all symptoms of pregnancy .every time my periods delay for 15 days and above .but i was not pregnant
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This phenomena is much more common than you may think. It is usual for the couple to come for termination of the pregnancy. It is advisable to continue the pregnancy. The couple can delay the second pregnancy. At times you terminate the first pregnancy and then the patient does not conceive later on.
Did kangaroos live during dinosaur ages?
No, kangaroos did not live in the times of the dinnosoars
Can kangaroos pause pregnancy?
Many of the 60 or more species of kangaroos can "pause" their pregnancy. This is called "embryonic diapause". The mother kangaroo spends most of her adult life pregnant, but in drought times, she has the ability to indefinitely "freeze" the development of the young embryo until food sources are replenished. This is one of the kangaroo's adaptations for living in a harsh country like Australia.
Is it safe to take phenergan before your six weeks pregnant?
Yes. This drug is totally safe in pregnancy. So many times it is used to prevent morning sickness in pregnancy.
Are there herbs you can take to help prevent pregnancy?
It is said that you can use wild yam as birth control. You want to drink a tea made of it at least 3 times a day. Do a google search on it and you should find more info. You can contact a Midwife and talk to them about natural birth control. * There are herbs that might prevent ovulation, or delay it. check our www.susanweed.com for info in herbs. Wild yam, itself, DOES NOT prevent pregnancy. Wild yam can be chemically altered to mimic progesterone (progestin). This can be bought at a health-food store, as a cream, and does work as effective birth control.
Draw the symbol for On delay times contacts and Off delay timer contacts and explain how each operates?
symbol of on delay timer
How many times in day do kangaroos drink water?
Kangaroos generally only seek water in the early morning and late afternoon.
How do kangaroos conserve water?
They can avoid activity during the day, especially at the suns peak times, Concentrate their urine by reabsorbing much of their water, and shelter in shaded areas to rest and prevent them getting to hot and dehydrated.
How many days in a week you can intercourse?
There are no health risks to sex as long as you are practicing sex. (so everyday). But make sure you are using condoms if you don't have a regular partner to prevent the transmission of an STD and yeast infections and you are on birth control to prevent pregnancy if you are not ready for a child. Contrary to many beliefs, you can still get pregnant during your period and other times of your cycle that were thought to prevent pregnancy. The only way to prevent pregancny 100% is to not have sex.
You took the day after pill 2 times in a month you took a pregnancy test in June it said - but your period hasn't come yet is it normal for the pill to delay your period like that?
It is possible for a morning after pill to cause a disruption in the normal menstrual cycle, but it depends upon the pill taken. One of the most common is Levonorgestrel; sometimes prescribed as l-norgestrel or d-norgestrel. Because of its use of progestogens it can lengthen the luteal phase of menstruation which in turn leads to a general delay or disruption of the normal cycle. In any event if you are concerned or if you experience a delay in your period of more than a week I reccommend seeing your physician for a check up and blood test. Over the counter pregnancy tests are not always accurate and another cause of delay could be pregnancy, which can in rare cases still occur even with the use of a "morning after pill".
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