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Biology Exam 3
Terms in this set (38)
Growth factors stimulate what?
What is a major difference between mitosis and meiosis
Meiosis produces haploid cells, whereas mitosis produces diploid cells
The two ends of a single chromosome are called what?
All of the following may be found in a DNA nucleotide EXCEPT what?
The genetic material in bacteria consists of what?
one circular DNA molecule
During which phase of the eukaryotic cell cycle does DNA and chromosome
the S phase of interphase
How many viable (functional) haploid cells are produced by one diploid cell during
meiosis in females?
In animal cells, spindle microtubules originate from structures called what?
Each of your body cells does/is/has/contains what?
is genetically identical to all others.
Which phase of mitosis is a "preparatory" step involving the development of spindle
Which of the following is the longest
an uncondensed eukaryotic chromosome
During meiosis, maternal and paternal chromosomes can exchange genetic material
at sites called what?
Which of the following is represented by birds?
diploid life cycle
In a eukaryotic cell that is undergoing cell division, what will become a new
What are the sex-determining chromosomes of a human male?
X and Y chromosomes
Most prokaryotes reproduce via a form of asexual reproduction called binary fission.
True or False?
The uncoiled DNA in a eukaryotic cell is much longer than the cell itself. True or
In DNA, phosphate binds to what?
The ant Myrmecia pilosula has the smallest number of chromosomes possible in a
eukaryote: females possess only one pair of chromosomes, and males have only one chromosome! Put another
way, female M. pilosula can be described as having the haploid condition n = 1 and the diploid condition 2n = 2.
Based on this scenario as well as your knowledge of gamete formation a female M. pilosula can produce
gametes with how many different sets of chromosomes?
In a typical human body cell, how many sex chromosomes are there?
When the two gametes that fuse to form a zygote contain different alleles of a given
gene, the offspring is what?
Traits controlled by sex-linked recessive genes are expressed more often in males
because of what reason?
the male has only one gene for the trait
If an individual who is homozygous for type B blood marries a heterozygous type A
individual, what is the chance that their first child will have type AB blood?
A recessive allele is one that has/does what?
whose effect is masked by a dominant allele.
Round pea shape is dominant over wrinkled pea shape. If a round pea has a wrinkled
parent, the round pea is what?
A disorder caused by nondisjunction of chromosome 21, resulting in a trisomy 21 child,
Yellow-seeded pea plants may be homozygous or heterozygous. To find out which, we
can cross the plants with what?
true-breeding green-seeded plants
: In crossing a homozygous recessive with a heterozygote, what is the chance of getting a
homozygous recessive phenotype in the F1 generation?
Sex-linked traits affect only sexual characteristics. True or False?
In a test cross, what percentage of the offspring will have the same phenotype as the
tested parent if the parent to be tested is homozygous?
Female turner Syndrome nondisjuction father
Female Trisomy x nondisjuction father
Male Klinefelter syndrome nondisjuction father
Male- Jacob Syndrome nondisjuction father
Females Turner Syndrome nondisjuction mother
Dies as embryo nondisjuction mother
Females Trisomy x nondisjuction mother
Male Klinefelter sydrome nondisjuction mother
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