New tab Search Q searchhfreeformnc ZOOM 18. Where are genes located? 19. How man
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Question
New tab Search Q searchhfreeformnc ZOOM 18. Where are genes located? 19. How many chromosomes does the human body contain? 20. What is a genotype? 21. What is a phenotype? 22. What does polymorphic mean? 23. What are identical twins also called? 24. What are the stages of prenatal development? 25. What is an ultra sound? 26. What is REM sleep? 27. The average newborn sleeps approximately how many hours a day? 28. What are the functions of neurotransmitters? 29. What are gross motor skills in newborns? 30. What was the most lethal disease for children in the past? 31. What did Susan Beal Hypothesize was one of the major role plavers in SiDS death? 32. Why is breast milk so important?Explanation / Answer
1.Genes are located in the chromosome,The region of the chromosome at which particular gene are located are called its locus.
2.Human body contain 23 pair of chromosome therefore tottal of 46 per cell.22 pair of chromosme are simmilar in both male and female is known as autosome and 23rd pair is different which is known as sex chromosome.
3.Genotype can be defined as a genetic makeup of particular organism.It is a set of genes in our DNA .
4.phenotype can be observed very easily in organism ,it is an organsim's actual property like colour hair,color,behaviour.
5.Polymorphism can be defined as a occurence of particular species more than one form .example can be male and female different form in a particular human species.
6.Two identical twins are also called monozygotic twins in which one fertilised egg splits in to two babies.