Brittany and Jarod have been trying to have a second child for 10 years. They have one healthy child, but Brittany has had four early, spontaneous abortions. The most likely explanation for the many pregnancy losses is that Brittany and Jarod
A) are not having sex frequently enough.
B) are each heterozygous for lethal alleles of the same gene.
C) are each homozygous for lethal alleles of the same gene.
D) have different alleles for all of their vital genes.
B) are each heterozygous for lethal alleles of the same gene.
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Which of the following is a component of a molecule of ATP? Select all correct choices
A. three phosphate groups B. ribose C. adenine D. three phosphate groups and ribose
The induced-fit model
A) was proposed by Hans Buchner. B) distorts the shape of the enzyme and the substrate. C) is also called the lock-and-key model. D) states that enzyme–substrate interactions are rigid. E) proposes that very strong covalent bonds are formed upon substrate binding.
Members of the Ecdysozoa clade are characterized by having a cuticle
____________________ Indicate whether the statement is true or false.
One of the factors leading to the initial characterization of Lyme disease in 1975 was the greater-than-expected incidence of (arthritis/osteomyelitis/mononucleosis) among children
What will be an ideal response?