If a diploid organism produces somatic cells containing 32 chromosomes, how many chromosomes would be contained in each of its gametes?
Select one:
a. 8
b. 16c. 32
d. 64
e. not enough information given
b
Mendel's experiments involved
Select one:
a. traits exhibiting complete dominance
b. cross pollination
c. all of the responses are correct
d. pea plants
c
How many chromosomes did you inherit from your biological father?
Select one:
a. 46
b. 24
c. 23
d. 2
c
In humans, the Y chromosome
Select one:
a. is homologous to the X chromosome
b. contains the SRY gene that initiates male gender determination
c. is present in all sperm
d. contains every gene needed for male development
b
Term used to describe the migration of cancer cells into blood and/or lymph
Select one:
a. metastasize
b. blastocyst implantation
c. angiogenesis
d. tumor suppressor gene activation
a
Which of the following statements involving normal human sexual reproduction is true?
Select one:
a. the head of the sperm contains 2n DNA
b. unequal cytokinesis occurs during spermatogenesis
c. a zygote undergoes meiotic divisions to form a blastocyst
d.
d
Which of the following cell types is incapable of mitosis?
Select one:
a. embryonic stem cells
b. gametes
c. adult stem cells
d. zygote
b
Which statement best summarizes this paradox: multicellular organisms are comprised of uniquely functioning cells despite the fact that they contain the same genetic information.
Select one:
a. the pattern of inheritance that dictates expression of a spec
b
Which part of the female reproductive anatomy is correctly matched with its function?
Select one:
a. ovaries: a contraceptive device
b. oviduct: the birth canal
c. uterus: implantation of blastocyst and gestational development
d. vagina: egg and sperm mee
c
If a sperm containing an X chromosome fertilizes an egg, the offspring will genotypically be
Select one:
a. a boy
b. XY
c. an identical twin
d. XX
e. a fraternal twin
f. a girl
d
Cell "program" that initiates intentional cell destruction
Select one:
a. apoptosis
b. ovulation
c. telomerase
d. cytokinesis
a
Alternative forms of the same gene are called
Select one:
a. genotypes
b. heterozygotes
c. gametes
d. alleles
d
From production through ejaculation, which is the correct pathway for sperm cells?
Select one:
a. Seminiferous tubules ? Epididymis ? Vas Deferens ? Urethra
b. Epididymis ? Seminal Vesicles ? Vas Deferens ? Prostate Gland ? Urethra
c. Testis ? Prostate Gl
a
The process of meiosis
Select one:
a. results in the formation of haploid offspring cells from a diploid parent cell
b. involves division of the zygote in the oviduct
c. enables root growth in plants
d. involves genetic shuffling during Meiosis II
a
What accounts for the existence of multiple alleles for a single trait within the human gene pool?
Select one:
a. new alleles arise due to mutations
b. crossing over and independent assortment during meiosis
c. All of the responses are correct
d. selectiv
a
The genetic information illustrated in this nucleus would best be described as
homologous chromosomes
Select one:
a. two gene loci, the lighter and darker colors indicating maternal and paternal contributions
b. four chromosomes, housing homozygous recess
d
In multicellular eukaryotic organisms, dead or damaged cells are replaced by ________.
Select one:
a. apoptosis
b. meiosis
c. mitosis
d. binary fission
c
Elephants are composed of cells containing 56 chromosomes. If a body cell of an elephant undergoes mitosis, each offspring cell will contain how many chromosomes?
Select one:
a. 14
b. 28
c. 56
d. 112
c
An advantage of sexual reproduction over asexual reproduction is that sexual reproduction
Select one:
a. is energetically less expensive
b. does not require a partner
c. results in the genetically identical cells
d. results in diversity within a species
d
Humans have about 21,000 genes. Which of the following genes is involved with cell cycle regulation?
Select one:
a. insulin gene
b. proto-oncogene
c. hemoglobin gene
d. ATP synthase gene
b
Cystic fibrosis (CF) is an inherited autosomal recessive disorder. A male that is heterozygous for CF has a child with a female who is also a carrier. Which statement regarding the potential offspring is correct?
Select one:
a. There is a 50% chance that
c
Which response best explains how identical twins form
Select one:
a. the splitting of blastocyst cells as they move down the oviduct Correct
b. a single sperm fertilizing a single egg which then proceeds through normal mitotic divisions
c. two zygotes tha
a
Taste receptors are proteins and therefore have a gene recipe. TAS2R38 is gene for a bitter taste receptor located on chromosome 7. PTC (Phenylthiocarbamide) is a harmless chemical produced due to this gene's expression. This gene is controlled by complet
a
A mutation in a tumor suppressor gene is most likely to result in
Select one:
a. inability to produce ATP
b. uncontrolled cell division of the mutant cell
c. non-functioning transport proteins
d. a variety of X-linked disorders
b
Males tend to be affected in greater numbers by X-linked recessive genetic disorders than are females because
Select one:
a. Y chromosomes are not as strong as the X chromosome
b. Males are the genetically weaker gender
c. females require two dominant all
d
Assuming the cell cycle is proceeding as intended, it involves
Select one:
a. normal growth of a cell in interphase
b. All of the responses are correct
c. DNA Replication in interphase
d. the formation of genetically identical offspring cells when cytokin
b
Human body cells have 2n DNA, meaning
Select one:
a. None of the responses are correct.
b. All of the responses are correct.
c. Human genomes have two alleles for every gene
d. Humans are diploid organisms.
e. Each biological parent contributed half of th
b
The reason siblings from the same biological parents have unique DNA is because
Select one:
a. of independent assortment and crossing over in meiosis
b. eggs are larger than sperm due to unequal cytokinesis
c. of mutations generated during pregnancy
d. of
a