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WorksheetsBio Unit 4 Monday Quiz 2 (3.4.2019)
Total questions: 37
Worksheet time: 3hrs 5mins
Why do sex-linked traits appear more often in males than females?
Because females have two X chromosomes, and males only have one
Because females have two Y chromosomes, and males only have one
Because females and males have the same chromosomes
Because females cannot have any sex-linked traits
Thomas Hunt Morgan is famous for an experiment with which organism?
Fruit Flies
Pea Plants
Chimps
Humans
When did Thomas Hunt Morgan conduct his experiment?
Early 1900s
Late 1900s
Late 1800s
Early 2000s
Thomas Hunt Morgan always supported Mendel & Darwin
True. His findings reinforced Mendel & Darwin's findings.
False. He first mistrusted their findings, but reconsidered after conducting his experiments.
False. His findings contradicted Mendel & Darwin's findings.
True. He always supported Mendel & Darwin even before he conducted his experiment.
Thomas Hunt Morgan's experiment was most important, because...
He was the first person to successfully map the position of genes on chromosomes
He provided evidence for the role of chromosomes as the carriers of genetic material
He was the first to use fruit flies in an experiment
He disproved Mendel & Darwin's theories
What are traits?
Particular variants of phenotypic characteristics
Sex-linked traits
XY configuration
Chromosomal Theory of Heredity
"Genes for phenotypes are located on chromosomes and passed on when an individual inherits that chromosome" is known as
Particular variants of phenotypic characteristics
Sex-linked traits
XY configuration
Chromosomal Theory of Heredity
Males have a ___________ of the two sex chromosomes.
Particular variants of phenotypic characteristics
Sex-linked traits
XY configuration
Chromosomal Theory of Heredity
Which scientist was a monk who studied pea plants?
Mendal
Morgan
Darwin
Franklin
Mendel's experiment with peas was most significant because..?
There are two phenotypes inherited from the parent. They may not be present as physical characteristics, but they are inherited.
There are two phenotypes inherited from the parent. They must be present as physical characteristics, because they are inherited.
That peas are yellow or green.
Mutations within the genes affected the organism
For a trait to be inherited, it must be physically present as a trait.
True
False
Traits can be inherited and not present as phenotypes.
True
False
Every trait will be shown in every generation.
False
True
What is a mutation?
A change in the genetic code that often alter cellular processes
A gene
A sex-linked trait
An enzyme
Who are the scientist famous for discovering that genes code for proteins?
George Wells Beadle
Edward Lawrie Tatum
Gregor Mendel
Thomas Hunt Morgan
What is the name of the hypothesis that proposed a link between genes and enzyme-catalyzed reactions?
'One Gene, One Enzyme' hypothesis
Chromosomal Theory of Heredity
Inheritance
Natural Selection
Beadle and Tatum induced mutations in _________________ during their experiment.
N. crassa, bread mold
P. caudatum
P. aurelia
Fruit flies
Beadle & Tatum's experiments were very time consuming, because...
They required a minimum of 299 different cultures
N. crassa reproduces extremely slowly
Enzymes are very rare
Modern computing tools were not yet available
Males have ________ chromosomes; female have ________ chromosomes.
50; 50
100; 50
fewer; lesser
XY; XX
Sex-linked mutations are on the ______________ .
Gene
X chromosome
Y chromosome
Allele
Polycystic Kidney Disease (PKD) can arise if a person has a mutation in one of three genes. Can PKD be inherited?
Yes
No
Chromosomes are found in the _____________ of a cell.
Nucleus
Mitochondrion
Golgi Apparatus
Endoplasmic Reticulum
Identify 2 phenotypes in this image
Hair color
Hair length
Body size
Age
In this population of guinea pigs, which appear to be the dominant alleles?
Black hair
Short hair
White hair
Long hair
What is a recessive allele?
In order for the trait to be expressed, only one allele needs to be present.
In order for the trait to be expressed, both alleles must be present.
In order for the trait to suppress the other trait, one allele needs to replace the other allele.
The allele replaced by the dominant allele.
What is a dominant allele?
In order for the trait to be expressed, only one allele needs to be present.
In order for the trait to be expressed, both alleles must be present.
In order for the trait to suppress the other trait, one allele needs to replace the other allele.
The allele replaced by the dominant allele.
Homozygous can be either dominant or recessive traits.
True
False
Heterozygous can be either dominant or recessive traits.
True
False
In a dominant heterozygous, the trait will be dominant.
True
False
In recessive heterozygous, the trait will be dominant.
True
False
In recessive homozygous, the trait will be dominant.
True
False
How many homologues are within one chromosome?
1
2
5
100
How many homologues do you get from your biological mother?
1
2
5
100
How many alleles does each chromosome have?
2
1
5
100
What does autosomal mean?
The gene is located on a non-sex chromosome
The gene is a sex-linked trait
Allele
DNA
Beadle and Tatum conducted a experiment exposing N. crassa to x-rays in order to induce mutations. Why would the mutant would not grow on a minimal growth media?
It showed that some part of the organism's metabolism had changed so that it could not make all the components it needed to grow.
It is the last generation, which cannot grow on the minimal growth media.
The mutated genes have to be transferred to a different test tube and go through the process.
Mutations can determine growth size.
What is a genome?
The entire DNA sequence
The physical traits of an organism
The variety of traits in a population
The homologue from a parent
