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1. The common ancestor of all the tetrapod vertebrates had four limbs with a similar skeletal structure to thatseen in many vertebrates today. Considering this, in what sense are the arms of humans homologous to the wings of a bird?
2. The green algal ancestors of plants existed in aquatic habitats, contained chlorophyll a and b, and had cellwalls composed mainly of cellulose. Land plants also contain chlorophyll a and b and have cell walls ofcellulose. What traits in the land plants are primitive? What trait represents divergent evolution from theancestral form?
3. The ancestors of hominids were quadrupeds, walking on four legs. Humans are bipedal. Is this characterderived or ancestral? Are the walking habits of chimpanzees primitive or advanced?
H.R. is an 18-year-old Caucasian female college student who presented to the University clinic seeking advice regarding methods of contraception. Data collected during the interview revealed:
For each replication of activity 13.1 in which you determine the type of gamete genotypes from a particular parent, write out the parental genotype followed by its gamete genotypes
As glucose is metabolized during respiration, a number of intermediate products are generated. Discuss how some of these intermediates are used to produce some of the essential biological molecules for the organism.
How does the blood, the nervous system, the cardiovascular system, and the muscular system each contribute to and support human respiration
What do we call the display of the chromosome pairs of a cell arranged by size and shape?
Are viruses cellular beings
The genetic information in cells consists of the sequential arrangement of:
Photosynthesis moderates global warming, briefly explain this statement
How does real time PCR work to quantify the initial amount of the DNA template? How should the method be modified to quantify the initial amount of RNA template extracted from tissue or cells?
Assume you performed a gram stain on a sample from a pure culture of bacteria and observed a field of red and purple cocci. Adjacent cell were not always the similar colour. What do you conclude.
In Mandel's peas, purplr flower color is dominant to white.which descriptions wouldn't allow you to determine the genotype at this locus?(please explain)
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