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Mathis
BiologyBiology
Identify the type of chromosomal abnormality described below. A person has a missing copy of X chromosome. A baby has an extra copy of chromosome 18. A fetus is found to have four copy's of chromosome 1.

1. Aneuploidy

2. Trisomy

3. Polysomy
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Onie
BiologyBiology
Hudson's voyages greatly increased Europeans' knowledge of the Antarctic.

a. True

b. False
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Camila Watts
BiologyBiology
Structure of a capsid
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Pickles
BiologyBiology
What is directional selection
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Mcclure
BiologyBiology
If you were testing how well different laundry soaps cleaned your clothes, the control group would be:
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Trujillo
BiologyBiology
Explain how the burning of food calories and the burning of wood are similar and how they are different.
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Delaney Weber
BiologyBiology
Does sugar molecules provide all elements needed to make four types of macromolecules?
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Saige Mcdonald
BiologyBiology
In which process can glucose transport reach saturation?
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Nora Escobar
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Which term refers to contrasting forms of the same gene
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Mekhi Holder
BiologyBiology
If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells A. it would be much longer before cardiac cells could respond to a second stimulation B. tetanic contractions might occur, which would stop the heart's pumping action C. contractions would last as long as the refractory period D. it would be less than 1-2 milliseconds
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Mariana
BiologyBiology
The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common same time. Which of the following is the ancestor at about the most likely explanation for these data?

A. Forelimb evolution was adaptive in people and bats, but not in whales.

B. Whales are not properly classified as mammals.

C. Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy

D. Genes mutate faster in whales than in humans or bats.

E. Humans and bats evolved by natural selection, and whales evolved by Lamarckian mechanisms.
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Josie Adkins
BiologyBiology
What effect would overfishing most likely have on a population of fish in a lake?

A-cause a gene flow to occur in the population.

B-create a bottleneck effect, reducing genetic diversity.

C-create a founder effect, restricting genetic variation.

D-increase the chances of mating between non related partners.

E-favor the process of stabilizing selection in the population.
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Jane Neal
BiologyBiology
What factors contributed to the worlds overall population growth in the last 150 years
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Cold Brew
BiologyBiology
The influences of nature on development refer to:

A. environmental influences

B. genetic influences

C. parental attitudes

D. teratogens
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Valentin
BiologyBiology
Which of the statements below does not describe antigens? a. The parts of antigen molecules that initiate immune responses are called epitopes or antigenic determinants. b. Antigens can include proteins, nucleic acids, lipoproteins, glycoproteins, and certain large polysaccharides. c. Antigens exhibit immunogenicity and reactivity. d. Antigens only come from microbes.
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