Can you run out of sperm? Nope! Your body maintains a surplus of sperm. In fact, about 1,500 sperm are produced every second.

Each dog’s gamete is produced from a process of meiosis and carries 39 chromosomes. Gametes are haploid (haploid or diploid?) or _(n or 2n?). The zygote that results from the fusion of the gametes contains 78 chromosomes-one set of 39 chromosomes from each parent.

23 chromosomes

In fact, each species of plants and animals has a set number of chromosomes. A fruit fly, for example, has four pairs of chromosomes, while a rice plant has 12 and a dog, 39.

Explanation: So in an animal with 32 (2n) chromosomes in somatic cell, number of chromosomes in sperm will be 16 (n).

A woman’s body isn’t really back to normal for 18 months after giving birth, and studies show that anemia and other complications are more common in pregnancies that are closer together. Some experts recommend waiting at least 27 months between births.

Some tips to try:

1. Let your older child help pick out items for the new baby’s room.
2. Find a special gift that your older child can give to the baby, such as a new book or toy, or a photo of the sibling for the baby’s room.
3. Arrange special time just for you and your older child.

Experts say the best time to get pregnant is between your late 20s and early 30s. This age range is associated with the best outcomes for both you and your baby. One study pinpointed the ideal age to give birth to a first child as 30.5. Your age is just one factor that should go into your decision to get pregnant.

Secondary infertility is the inability to conceive or carry a pregnancy following the delivery of a child. While it isn’t uncommon, the good news is that you’re more likely to have a successful second pregnancy if you already have a child, says Ob/Gyn Laura Detti, MD.

It can take a while to get pregnant the second or third time around, even if it happened very quickly the last time. Find out the best time of the month to have sex if you want to get pregnant. If you’re still not pregnant after a few months, talk to your doctor.

“In general, every other night around the time of ovulation helps increase your chance of getting pregnant,” Goldfarb says. Sperm can live up to 5 days inside your body. The best suggestion is to have sex regularly — when you’re ovulating, and when you’re not.

Yes, labour is likely to be quicker with a second or subsequent birth . It is especially likely that the early stages (latent labour) will be faster and contractions will become stronger more quickly. So you might need to consider getting to the place where you will give birth faster than last time.

One woman may go from having a closed cervix to giving birth in a matter of hours, while another is 1–2 cm dilated for days or weeks. Some women do not experience any dilation until they go into active labor. This means that the cervix is completely closed initially, but it widens to 10 cm as labor progresses.

How long it lasts: Active labor often lasts four to eight hours or more. On average, your cervix will dilate at approximately one centimeter per hour.

For first-time mums, the first stage of labour (cervix dilating), lasts an average of eight hours but for women who’ve had a baby before, the average labour is five hours. The second stage (pushing and birth) is likely to last under two hours, compared with three hours for first-time mums.

Middle child syndrome is the feeling of exclusion by middle children, due directly to their placement in their family’s birth order. The second child (or middle child) no longer has their status as the baby and is left with no clear role in the family, or a feeling of being “left out”.

It’s true that you’ll have less time and attention to devote to every milestone and first. But you’ll also have more perspective, more self-assurance, and more experience with all things parenting. While your second child won’t have you to themselves, they’ll have the benefit of growing up with a sibling.

As the countdown to birth begins, some signs that labor is 24 to 48 hours away can include low back pain, weight loss, diarrhea — and of course, your water breaking.

You know you’re in true labor when:

• You have strong and regular contractions. A contraction is when the muscles of your uterus tighten up like a fist and then relax.
• You feel pain in your belly and lower back.
• You have a bloody (brownish or reddish) mucus discharge.
• Your water breaks.

Lying down on your side Your partner can rub your back to help you relax. You may even drift off to sleep, at least between contractions. Rest until you need to be up to meet the intensity. Also try: rocking in a chair or glider.

Although every woman is different, you may notice some of these signs that indicate that labor might start in the next few days: A change in energy levels. If you’re feeling extra tired or experiencing a sudden surge of energy in the days or weeks before labor, this is perfectly normal.