Bio I- Genetics REVIEW, 3/13: Question Preview (ID: 17309)


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A change in allele frequency following a dramatic reduction in the size of a population
a) Bottleneck Effect b) Genetic Drift c) Gene Pool d) Stabilizing Selection
Situation in which allele frequencies in a population remain the same
a) Genetic Equillibrium b) Bottleneck Effect c) Genetic Drift d) Gene Pool
Random change in allele frequency caused by a series of chance occurences that cause an allele to become more or less popular in population
a) Gene Pool b) Stabilizing Selection c) Disruptive Selection d) Genetic Drift
Form of natural selection in which individuals at the upper and lower ends of the curve have higher fitness that individuals near the middle of the curve
a) Gene Pool b) Stabilizing Selection c) Disruptive Selection d) Genetic Drift
Form of natural selection in which individual near the center of a distribution curve have higher fitness than individuals at the other end of the curve.
a) Gene Pool b) Stabilizing Selection c) Disruptive Selection d) Genetic Drift
All the genes, including all the different alleles for each gene, that are present in a population at any one time
a) Gene Pool b) Stabilizing Selection c) Disruptive Selection d) Genetic Drift
Gametes have ___.
a) homogolous chromosomes b) twice the number of chromosomes found in body cells c) two sets of chromosomes d) Half the number of chromosomes found in body cells
A cross between a black chicken and a white chicken produces all speckled offspring. This type of inheritance is known as ___.
a) incomplete dominance b) codominance c) complete dominance d) sex-link traits
What is formed at the end of meiosis?
a) two genetically identical cells b) four genetically identical cells c) four genetically different cells d) two genetically different cells
Chromosomes form tetrads during ____.
a) Prophase I of meiosis b) Metaphase I of meiosis c) Interphase d) Anaphase II of meiosis
Which of the following shows that environment can affect genetic traits?
a) Oak trees get taller as they grow b) Hydrangea flower color varies with soil pH c) Dandelion plants are self-pollinating d) Pinion trees bear cones every other year
How many *different* allele combinations would be found in the gametes produced by a pea plant whose genotype was RrYY?
a) 2 b) 4 c) 8 d) 16
When one allele is not completely dominant over another, this is an example of ___.
a) multiple alleles b) incomplete dominance c) codominance d) sex-linked traits
In the cross between a heterozygous male and a homozygous dominant female, which of the following is true about the resulting offspring, assuming complete dominance is involved?
a) about half will be homozygous recessive b) all will be homozygous recessive c) about 3/4 will be heterozygous d) All will demonstrate the dominant trait
If a pea plant's alleles for height are tt, what is true of its parents?
a) both parents were tall b) both parents were short c) both parents contributed a recessive allele d) both parents contributed a dominant allele
If a pea plant has a recessive allele for green peas, it's phenotype will be ______..
a) green if it also has a dominant allele for yellow peas b) green and yellow if it has a dominant allele for yellow peas. c) green if it does not have a dominant allele for yellow peas d) yellow if it does not also have a dominant allele for green peas
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