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False, red blood cells circulate for an average of 120 days before they are worn out from squeezing through narrow capillaries.
It is false.
FALSE
False. Vacuoles are larger in plant cells and their retention of water help with turgidity.
If there was an actual embryo, it was not a false pregnancy.
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Not usually, no. If she is having more than one "false" heat, chances are it's not false at all. She probably absorbed the embryo or aborted early and came back to heat soon after.
False
No. That is false. Embryo normally get attached to uterine cavity. It is abnormal and dangerous for the embryo to get attached to fallopian tube.
Sort of false - it was about 1.5 billion years ago.
False, red blood cells circulate for an average of 120 days before they are worn out from squeezing through narrow capillaries.
True. Sperm and egg cells are gametes, and thus are necessarily haploid. These haploid gametes were created through the process of meiosis. When the two fuse to create an embryo, the new embryo will then have 46 chromosomes, the full number for a human. The embryo will receive one copy of each chromosome from each parent. If sperm and egg cells were to have the full set of 46 chromosomes, with both copies of each chromosome from each parent, then when they fused the embryo would have 92 chromosomes total. And the progeny of that embryo would have an even higher number of chromosomes. Having haploid gametes is necessary to maintain the stability of the species.
While early pregnancy testing is possible it often yields a false negative. In cases where fertility drugs are used it can yield a false positive. It is best to wait 14-16 days after ovulation, unprotected sex, or embryo transfer for the most accurate results.
That is correct.
It is false.
false reproductive cells (also called germ cells) are egg & sperm when these reproductive cells fuse together, the zygote is formed