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Bio 101 Module 5 Latest Update -

Exam (elaborations) Dec 14, 2025 ★★★★★ (5.0/5)
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Bio 101 Module 5 Latest Update - Actual Exam Questions and 100% Verified Correct Answers Guaranteed A+

A mutant allele can cause genetic disease because - CORRECT ANSWER: a mutant

allele is a blotched recipe for a protein; a protein gets made but it is not the right one and so it can't perform its function an an enzyme properly

A mutation in which of the following genes is worse? - CORRECT ANSWER: regulatory gene

A mutation in which the following can be passed on to offspring - CORRECT ANSWER: a germ cell

A small drop of blood is found at a crime scene. There is not enough DNA in the blood

to do an analysis. How can the amount of DNA be increased? - CORRECT ANSWER:

PCR

Although the Y chromosome in humans has few genes, there is one gene that it does

have that is very important. What is it? - CORRECT ANSWER: the male-determining

factor gene

Are most mutations dominant or recessive? - CORRECT ANSWER: recessive

Assume the gene for flower color (possible alleles: R,r) is on the SAME chromosome as the gene for plant height (possible alleles: T,t). A TTRR plant is crossed with a ttrr plant to produce a TtRr plant. What kinds of gametes will this TtRr plant make if there is NO

CROSSING OVER when it does meiosis? - CORRECT ANSWER: If we were to look at

the chromosomes for the TtRr plant we would find that one chromosome had TR and the homologous chromosome tr. If there is no crossing over then chromosomes remain intact when they go into gametes. So some gametes will get the chromosome with TR and some will get the chromosome with tr.

  • / 2

At the cellular level, a gene as instructions for making - CORRECT ANSWER: a

particular protein

At the DNA level, what is the simplest mutation that can occur and how has the DNA

changed? - CORRECT ANSWER: point mutation, one nucleotide or base is changed to

another

Chances of a women having a child with Down syndrome is highest for women.. -

CORRECT ANSWER: 40-50 years old.

Chromosomes other than sex chromosomes are called - CORRECT ANSWER:

autosomes

DNA from 2 individuals can be compared by cutting their DNA into fragments, then sorting the fragments by size. The process that sorts the fragments is called -

CORRECT ANSWER: electrophoresis

DNA polymerase is responsible for - CORRECT ANSWER: constructing a new strand

during DNA replication

DNA replication occurs before the process of _______ in somatic cells and the process

of ________ in germ cells. - CORRECT ANSWER: mitosis, meiosis

Down syndrome is caused by what chromosome problem? - CORRECT ANSWER: an

extra copy of a chromosome

For an autosomal dominant, genetic disease, if a normal man marries an affected woman, what proportion of their children would be expected to have the disease? -

CORRECT ANSWER: 1/2

For an autosomal recessive genetic disease how many copies of the bad allele do you

have to have to express the disease? - CORRECT ANSWER: two

  • / 2

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Category: Exam (elaborations)
Added: Dec 14, 2025
Description:

Bio 101 Module 5 Latest Update - Actual Exam Questions and 100% Verified Correct Answers Guaranteed A+ A mutant allele can cause genetic disease because - CORRECT ANSWER: a mutant allele is a blotc...

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