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Human Reproductive Biology

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1. Define the following: chromosome, chromatid, centromere, autosome, sex chromosome, gene, karyotype, pheontype, genotype, allele, dominant, recessive, incomplete dominance, codominance, heterozygous, homozygous, polygenic, multiple alleles, carrier
2. Black hair is dominant over blond hair. A women with black hair whose father had blond hair reproduces with a blond haired man. What are the chances of the couple having a blond-haired child?
3. A child has cystic fibrosis. His parents are normal. What is the genotype of all persons mentioned?
4. The genotype of a woman with type B blood is BO. The genotype of her husband is AO. What could be the genotypes and phenotypes of the children?
5. Describe the structure of DNA. How does it differ from RNA? What does the term complementary base pairing mean?
6. What are the two types of DNA testing for a genetic disorder? Briefly describe each.

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This solution answers various questions regarding human reproductive biology.

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http://ghr.nlm.nih.gov/search?query=complementary+base+pairing&Search=

http://www.newkidscenter.com/What-Hair-Color-Will-My-Baby-Have.html

1. Define the following: chromosome, chromatid, centromere, autosome, sex chromosome, gene, karyotype, phenotype, genotype, allele, dominant, recessive, incomplete dominance, codominance, heterozygous, homozygous, polygenic, multiple alleles, carrier

Chromosomes are DNA molecule that is packaged in the nucleus of each cell with the appearance of a thread like structure. Chromatids represent one of two identical halves of replicated chromosomes in human beings. Chromosomes are separated into either a short arm (p) or a long arm (q), and the constricted region responsible for this separation is known as a centromere. Any of a human's numbered chromosomes that aren't sex chromosomes are considered autosomes. Sex determination is decided by a sex chromosome, which is any type of chromosome participating in sex determination. Heredity is predicated upon physical and functional determination, which is the definition of a gene. Karyotype tests are able to produce an image of an individual's collection of chromosomes. The definition of a phenotype is representative of a person's observable traits including height, eye color, and blood type. The definition of a human being's genotype is that this represents the person's collection of genes. Whenever two or more versions of a gene is present, this is an allele. ...

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