If an embryo splits at the two-cell stage, each of the resulting identical twins will have its own placenta. If such a split occurs near the time of implantation, the identical twins may share a placenta. By contrast, fraternal twins never share placenta. Explain this difference between the two types of twins.

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A: Introduction :- Fish are aquatic vertebrate animals having gills but no digits on their limbs, such…

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A: Stomata are the tiny holes which are present on the surface of the leaves. The function of the…

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A: Spermatogenesis gives rise to the production of male gametes.

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A: First of all, E. coli can utilize glucose and lactose both as a carbon source. Lactose is a…

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A: The coat color is encoded by the genes present on the X chromosomes.  The black color is present in…

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A: Crickets are nocturnal, so they chirp at night. Male chirp to attract the female for mating.       “…

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A: Introduction Photosynthesis is the process through which green plants and other organisms use light…

Q: 8. Which of the following statements about oxytocin is correct? A. Dilation of cervix and baby…

A: Oxytocin is a hormone delivered by the pituitary organ that causes expanded expansion of the uterus…

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A: Introduction Carbohydrates, lipids, and proteins are macronutrients that must be consumed in large…

Q: Match the pieces of the negative feedback arc that regulated the increase in stroke volume seen…

A: Answer given in step 2. Thank you.

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A: Hardy Weinberg equilibrium is present when population is of large size and random mating is present…

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A: Invertebrates are the organism belonging to animal kingdom which do not possess backbone . Such…

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A: Cancer is a broad term that describes a variety of disorders characterised by the uncontrollable…

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A: Sex linked character is usually present on the sex chromosomes which are either in the form of x or…

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A: Homeostasis refers to the process of maintaining internal physiological parameters in a changing…

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A: In presence of ancestors a new species evolve and both remain in the same habitat/same geographical…

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A: The process of fusion of sperm with egg (ovum) to produce zygote is called fertilization.

Q: A condition wherein the presence of a certain allele causes death of the organism. O lethal genes O…

A: a  condition wherein the presence of a certain allele causes death of the organism is called lethal…

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A: Ruffed Grouse are one of ten grouse species native to North America, and they are one of the…

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A: An allele is a variant form of a gene.

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A: Answer given in step 2 onwards. Please find attachment. Thank you

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A: Homeostasis refers to the process of maintaining internal physiological parameters in a changing…

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Q: Gestation takes about -____weeks. a) 38-42 b) 44-46 c) 28-30 O d) 48-52

A:

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A: Answer

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Q: a catabolic process.

A:

Q: 10. Phagocytosis by a phagocyte is required for: B cell action b. helper T (T4) cell action c.…

A: Answer

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A: Proteins are the macromolecules ; which are made up of amino acids.These proteins play very…