WHAT IS LIFE?:GDE.TO BIO....W/PHYS.(LL)
5th Edition
ISBN: 9781319360696
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 9, Problem 1MC
Summary Introduction
Introduction:
Genes usually have more than one form, with each form coding for a different
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An organism that has two different alleles for a single trait is said to be
for that trait.
Select one:
O
O
O
a. heterologous
b. heterozygous
c. homozygous
d. haploid
e. diploid
A diploid individual with two identical alleles for a particular gene is said to be:
a.
homozygous for that gene
b.
heterozygous for that gene
c.
pleiotropic for that gene
d.
autosomal for that gene
e.
codominant for that gene
During the observation of a baby the diagnosis of Down's syndrome was made. What is the main cause of this pathology?
Select one:
a. Trisomy on the 13-th chromosome.
b. Trisomy on the 21-st chromosome.
c. Trisomy on X chromosome.
d. Monosomy on the 1-st chromosome.
O e. Undivergence of sex chromosomes.
Chapter 9 Solutions
WHAT IS LIFE?:GDE.TO BIO....W/PHYS.(LL)
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following best describes Klinefelter syndrome? A. It is an example of aneuploidy. B. Affected individuals are males with low fertility. C. Only one X chromosome is active in these individuals. D. All of the above.arrow_forwardA phenotype reflecting a new combination of genes occurring during gamete formation is called Select one: O a. homozygous. O b. a recombinant type. O c. a multihybrid cross. O d. an independent assortment. O e. heterozygous.arrow_forwardProduction of more than one phenotypictrait by a single gene is calleda. pleiotropy.b. genetic determinism.c. codominance.d. penetrance.e. genetic recombination.arrow_forward
- Humans have 23 chromosomes per set. A person with 45 chromosomescan be described as beinga. euploid.b. aneuploid. c. monoploid.d. trisomic.arrow_forwardWhich of the following is a FALSE statement regarding human chromosomes? A. The chromosome number in humans is 2n=46. B. Gametes have half number of the chromosomes as in somatic cells. C. There are 22 pairs of autosomes and 2 sex chromosomes. D. Liver cells can be polyploids. They can have 23, 46, 69 or 92 chromosomes.arrow_forwardIn 95% of cases of Down's syndrome, there is an entire extra chromosome 21 in every cell. This aneuploid condition is the result of A. Improper crossing over. B. Independent assortment. C. Nondisjunction. D. All are correct.arrow_forward
- Which of the following statements accurately represents the difference between a gene and a locus? a. A gene is dominant, and a locus is recessive. b. A locus and a gene are essentially the same - there is no difference. c. A locus occurs in diploid cells, and a gene occurs in a haploid cell. d. A locus is a phenotype and a gene is a genotype.arrow_forwardHow many types of gametes can be produced from the following diploids? Show the gametes. A. AaBB B. AaBb C. AABBarrow_forwardCrossing over means the same as: a. incomplete dominance b. the process by which pieces of homologous chromosomes are exchanged c. heterozygosity d. the peculiar lineup of homologous chromosomes e. independent assortmentarrow_forward
- One day while walking across campus, you see a female butterfly laying fertilized eggs, as shown in the image: 1. The adult butterfly is: a. Viviparous b. Ovoviviparous c. Oviparous d. None of these 2. Gender in the butterfly’s offspring will be determined by: a. Sex chromosomes, in which XX is female XY is male b. A single sex chromosome, in which XX is female and XO is male c. Haplodiploidy, in which an unfertilized egg develops into a female through ameiotic parthenogenesis. d. Hermaproditism e. c and d f. None of these 3. In the development of the butterfly, it has: a. A vermiform larva and a coarctate pupa that develops inside a puparium b. A eucephalus larva and an exarate pupa that develops inside an ootheca c. An eruciform larva and an obtect pupa that develops inside a chrysalis d. A scarabeiform larva and a eucephalus pupa that develops inside a cocoon of silk.arrow_forwardA patient has mental deficiency, a short stature, and the mongolian type of the eyelid fold. The microscopical examination of the patient's karyotype revealed the presence of trisomy on the 21-st chromosome. What do we call the disease which is caused by this chromosomal abnormality? Select one: a. Down's syndrome. b. Klinefelter's syndrome. O c. Turner's syndrome. d. Edward's syndrome. e. Patau syndrome.arrow_forwardOne of the forms of rickets is inherited in the autosomal dominant way. This disease is a result of: Select one: a. Aneuploidy. O b. Changes in the number of chromosomes. c. Chromosomal mutations. e. Gene mutations. O d. Polyploidy.arrow_forward
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