Lsue Biology 1001 Final Actual 97 Questions And 100

Lsue Biology 1001 Final (Actual / ) 97 Questions And 100% Verified Correct Answers

How many generations does it take to develop a new plant species by polyploid?

• one
• two
• ten
• about twenty
• one

Both mitosis and meiosis are preceded by

• prometaphase
• interphase
• prophase
• telophase
• interphase

A woman has been trying to conceive for several years, unsuccessfully. At a fertility clinic, they discover that she has blocked Fallopian tubes. Using modern technologies, some of her eggs are removed, fertilized with her husband's sperm, 1 / 4

and implanted into her uterus. The procedure is successful, but the couple discovers that their son is color blind and the blood type O. The woman claims that the child can't be theirs since she has blood type A and her husband has blood type B.Also, neither parent is color blind, although one grand parent (the woman's father) is also color blind. As a genetic counselor, you would explain to the parent that

• the eggs must have been accidentally switched, since the

baby's blood type has to match one of his parents

• each parent could have contributed one recessive allele,

resulting in type O blood

• the eggs must have been accidentally switched, since a type

A parent and a type B parent can have any type children except O

• it is possible for the baby to have type O blood, since type O

is inherited through a dominant allele

• each parent could have contributed one recessive allele,

resulting in type O blood

According to scientist, about what percentage of men currently living in Central Asia may be descended from the Mongolian ruler Genghis Khan?

• 4%
• 8%

C) 25% 2 / 4

D) 40%

• 8%

Which of the following is essentially the opposite of pleiotropy?

• incomplete dominance
• codominance
• multiple alleles
• polygenic inheritance
• polygenic inheritance

The chromosome theory of inheritance states that

• chromosomes that exhibit mutations are the source of

genetic variation

• the behavior of chromosomes during meiosis and

fertilization accounts for patterns of inheritance

• the behavior of chromosomes during mitosis accounts for

inheritance patterns

• humans have 46 chromosomes
• the behavior of chromosomes during meiosis and

fertilization accounts for patters of inheritance

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The alleles of a gene are found at ______ chromosomes

• the same locus on non homologous
• different loci on homologous
• different loci on non homologous
• the same locus on homologous
• the same locus on homologous

DNA polymerase

• joins nucleotides to produce new polymers of RNA
• reads the RNA strand, and adds the complementary

nitrogen bases to make new RNA strand

• Stretches the DNA polymers to make new DNA strands
• joins the two DNA fragments
• reads the DNA strands, and adds the complementary

nucleotides to amen a new DNA strand

• reads the DNA strands, and adds the complementary

nucleotides to amen a new DNA strand

Why does the recessive allele disorder, such as color blindness, that is linked to human sex chromosomes X affect mostly males? Because, it is more likely that

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