In humans, the transparent sac that contains fluid that cushions the embryo and maintains a constant temperature and pressure is the
A. amnion.
B. yolk sac.
C. embryonic disc.
D. chorionic villus.
E. chorion.
A. amnion.
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In watermelons, the gene for green color is dominant over its allele for striped color. At another gene locus, the gene for short shape is dominant over its allele for long shape. These two allele pairs assort independently. If a plant with long, striped fruit is crossed with a plant that is heterozygous for both of these traits, what percentage of the offspring do you expect will be short and green? ( Enter the number only without the percent sign. For example, enter 100% as 100 and enter 12.5% as 12.5 )
What will be an ideal response? Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about two-gene crosses and independent assortment? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A person with O type blood
A. lacks all of the alleles for ABO blood type. B. lacks A and B antigens. C. is called a universal recipient. D. could not have the Rh factor.
Which of the following can describe the phospholipid bilayer?
a. a homogenous solution b. a heterogenous solution c. fluid mosaic d. homogenous mosaic
Cellular respiration is an efficient process that captures approximately 35% of the energy in glucose. From 1 molecule of glucose, it yields:
a. 3 to 4 ATP, depending on the tissue and organism. b. 10 to 12 ATP, depending on the tissue and organism. c. exactly 40 ATP, in every tissue and organism. d. 30 to 32 ATP, depending on the tissue and organism. e. exactly 35 ATP, in every tissue and organism.