Human Biology Custom Edition
11th Edition
ISBN: 9781337631532
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 20, Problem 7SQ
A gamete affected by nondisjunction could have __________.
- a. a change from the normal chromosome number
- b. one extra or one missing chromosome
- c. the potential for a genetic disorder
- d. all of the above
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Chapter 20 Solutions
Human Biology Custom Edition
Ch. 20 - Prob. 1RQCh. 20 - What is a carrier of a genetic trait?Ch. 20 - What evidence indicates that a trait is coded by a...Ch. 20 - Prob. 4RQCh. 20 - Explain what nondisjunction is, and give two...Ch. 20 - _______ segregate during ______. a. Homologues;...Ch. 20 - Prob. 2SQCh. 20 - Genes on the same chromosome tend to stay together...Ch. 20 - Prob. 4SQCh. 20 - A chromosomes structure can be altered by _______....
Ch. 20 - Nondisjunction can be caused by ________. a....Ch. 20 - A gamete affected by nondisjunction could have...Ch. 20 - Genetic disorders can be caused by __________. a....Ch. 20 - A person who is a carrier for a genetic trait...Ch. 20 - Prob. 10SQCh. 20 - If a couple has six boys, what is the probability...Ch. 20 - Human sex chromosomes are XX for females and XY...Ch. 20 - People with Down syndrome have an extra copy of...Ch. 20 - Prob. 4CTCh. 20 - Prob. 5CTCh. 20 - About 4 percent of people of Northern European...Ch. 20 - The following pedigree shows the pattern of...
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- Which of the following terms describes the process of homologous chromosomes failing to separate correctly during meiosis?A. Chromatid adhesion syndromeB. NondisjunctionC. AmetaphasiaD. Anti-anaphasearrow_forwardIdentify whether the following terms is related to either mitosis or meiosis or both. 1. Identify whether the following terms is related to either mitosis or meiosis or both. a. mitosis b. meiosis c. both 2. somatic cells/ body cells a. mitosis b. meiosis c. both 3. two genetically similar diploid cellsarrow_forwardWhat is it called when chromosomes fail to separate properly during meiosis? A. Nondisjunction B. Karyotype C. Chromosomal separation failure D. Inappropriate separation E. Karyokinesisarrow_forward
- Hemophilia is a disease caused by a gene found on the X chromosome. Therefore, it is a sex-linked disease which is caused by the recessive allele. Suppose, a man with hemophilia marries a woman who is homozygous dominant for the trait. Predict the genotype of the man. (XH = normal; Xh= hemophiliac) * a. XH Y b. XHXh c. XhXh d. Xh Yarrow_forwarda. The ovaries produce secondary the female sex cells. b. Stem cells, called divide by to produce primary each form part of a c. At the onset of puberty, tens of thousands of ovaries. Between menarche and menopause, each primordial follicle develops into a in the and its primary oocyte completes d. Some primary oocytes become 23-chromosome cells that begin then pause. secondary oocyte is released into is completed when e. Each month, the uterine tube. the oocyte isarrow_forwardAn individual’s ________ is its genotype. a. genetic composition b. number of chromosomes c. physical appearancearrow_forward
- Identify whether the following terms is related to either mitosis or meiosis or both. 1. two genetically similar diploid cells a.mitosis b.meiosis c.both. 2.four genetically different haploid cells a.mitosis b.meiosis c.both. 3.gametes/ sex cellsarrow_forwardFor C the one above number 4 is for kleinfelter syndromearrow_forwardJust the letter please, i dont need an exlpation In humans, what sex can be a carrier of an X-linked recessive disorder yet be phenotypically normal? a. Male b. Female c. Both sexes are equally likely to be carriers d. It depends on the disorderarrow_forward
- Organism X has the genotype Ccdd. How many different types of gametes can it make and in what proportion? * A. 3 Cd 1 cd B. 1 CD: 1 Cd : 1 cD 1 cd C. 1 Cc : 1 dd D. 1 Cd 1 cd A human female "carrier" who is heterozygous for the recessive, sex-linked trait hemophilia (XHXH), marries a normal male (XHY). What proportion of their male progeny will show the trait? A. 1/4 B. 1/2 C. 0 D. Allarrow_forwardThe two main sources of genetic variation from meiosis are ________. a. random orientation of homologous pairs and mutation b. crossing over and random mutation c. random orientation of homologous pairs and crossing overarrow_forwardIf a genetic disease is inherited on the basis of an autosomal dominant gene, one would expect to find which of the following? A. Affected fathers have only affected children. B. Affected mothers never have affected sons. C. If both parents are affected, all of their offspring have the disease. D. If a child has the disease, one of his or her grandparents also had the disease.arrow_forward
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