Answer:
A. carbon dioxide and water
The question is incomplete. The complete question is as following:
In humans, the pelvis and the femur, or thighbone, are involved in walking. In whales, the pelvis and femur shown in this figure represent...
Answer:
vestigial structures
Explanation:
A "vestigial structure" or "vestigial organ" are defined as the organs that no longer have any function in the organisms' body but had an important role in past.
<em>Pelvis and femur are thigh bones in humans which helps them in walking but in whale's pelvis and femur are considered as vestigial structures. </em>
The pelvis and femur in whales, are the inherited structure from ancestors and shows evidence for evolution on the basis of natural selection.
Hence, the correct answer is vestigial structures.
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Answer:
true
Explanation:
a pollinator carries pollen grain to the next flower for fertilization to occur
The correct answer is: d. Lethal dominant alleles are harmful whether they are carried in homozygous or heterozygous form, so there is always strong selection against these alleles.
Lethal alleles cause the death (prenatal or after birth, but usually early in development) of the organism that carries them. There are three types of lethal alleles:
• Recessive-both alleles must be defective,
• Dominant-it is sufficient that one allele is lethal to cause the death,
• Conditional depending on the gene or genes involved.
Lethal alleles are usually a result of mutations in genes essential for development of an organism.
