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ISCI 173 Exam 2 || WITH A+ GRADED SOLUTIONS.
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What type of cells undergo mitosis? a) Non-gametic cells b) both of these c) gametes (egg and sperm) d) neither of these correct answers a) non-gametic cells during which phase of the cell cycle are the chromosomes duplicated? a) cytokinesis b) meiosis c) mitosis d) interphase corr...

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  • December 1, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • what type of cells undergo mitosis a non gametic

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  • ISCI 173
  • ISCI 173

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ISCI 173 Exam 2 || WITH A+ GRADED SOLUTIONS.
What type of cells undergo mitosis?
a) Non-gametic cells
b) both of these
c) gametes (egg and sperm)
d) neither of these correct answers a) non-gametic cells

during which phase of the cell cycle are the chromosomes duplicated?
a) cytokinesis
b) meiosis
c) mitosis
d) interphase correct answers d) interphase

If a human cells starts with 46 chromosomes, how many chromosomes would they have in
gametic cells after meiosis?
a) 92
b) 23
c) impossible to determine
d) 46 correct answers b)23

Like mitosis, meiosis involves duplication of the chromosomes before division starts.
However, there are __________ rounds of cell division during meiosis and __________
during mitosis.
a) two; none
b) four; one
c) four; two
d) two; one correct answers d) two; one

most viruses use RNA, not DNA as their genetic material. Is the statement "all life on Earth
uses DNA as the genetic material" still accurate?
a) Yes, viruses use their RNA to make SNA when needed for division
b) Yes, viruses are not considered living things
c) Yes, RNA and DNA are two terms used to describe the same thing
d) No, living viruses without DNA contradict the statement correct answers b) Yes, viruses
are not considered living things

Most human genes come in alternate versions called:
a) characters
b) alleles
c) traits
d) genotypes correct answers b) alleles

every cell in your body expresses every one of your genes.
a) true
b) false correct answers b) false
because cells regulate gene expression to ensure that only the appropriate genes are expresses
are the right time, only in the appropriate cell types and in appropriate amounts. For example,
white blood cells express hemoglobin genes.

, An individual who has two of the same allele is said to be?
a) heteromologous
b) heterozygous
c) homologous
d) homozygous correct answers d) homozygous

The appearance resulting from a given gene combination is referred to as the:
a) phenotype
b) genotype
c) stereotype
d) alleleotype correct answers a) phenotype

The two alternatives for a trait are red and white and red is dominant. What is the genotype of
a homozygous dominant individual?
a) WW
b) RR
c) ww
d) rr correct answers b) RR

DNA correct answers the genetic material that organisms inherit from their parents

genes correct answers a length of DNA that codes for the proteins that make up our bodies.
The unit of inheritance

Chromosomes correct answers a gene-carrying structure found in the nucleus of a eukaryotic
cell.

relationship between DNA, genes and chromosomes correct answers chromosomes are made
up of genes which are made up of DNA. Cells contains chromosomes which are made up of
DNA of which stretches are defines as genes.

sickle-cell anemia correct answers genetic disorder characterized by red blood cells that form
an abnormal sickle shape that clump more regularly. it is caused by a mutation.

differences between DNA and RNA correct answers DNA: always found in nucleus, double
helix, base T, directs the production of proteins via mRNA
RNA: single helix, base U, leaves the nucleus, multiple types of RNA that play various roles
in the cell

the central dogma correct answers theory that states that, in cells, information only flows
from DNA to RNA to proteins

DNA__________, RNA___________, PROTEIN. correct answers transcription and
translation

the genetic code correct answers collection of codons of mRNA, each of which directs the
incorporation of a particular amino acid into a protein during protein synthesis

mutation correct answers any change in the nucleotide sequence of DNA

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