Analysis of marsupial embryos have found that neural crest cells begin their migration earlier in marsupials than in other mammal groups, thus allowing marsupials to being using their mother's milk at an earlier age than other mammals
This is an example of:
a. neofunctionalization. c. heterochrony.
b. homeotic transformation. d. subfunctionalization.
C
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A variable trait in corn is the presence or absence of knobs at particular sites on some chromosomes. The allele present on each chromosome determines whether or not that chromosome has a knob. Suppose that one member of each of two pairs of homologs in a corn plant has a knob. If this plant is crossed with a knobless plant, what percentage of the offspring is expected to have only knobless chromosomes?
A) 100% B) 75% C) 50% D) 25% E) 0%
Which of the following represents alleles or genes
responsible for skin color? a. SLC24A5 in Africans b. DCT in Chinese c. Both SLC24A5 and DCT d. WHT genes in Europeans e. All of these
Actual exchange of gases in the lungs occurs in the
a. bronchi. b. alveoli. c. bronchioles. d. tracheas. e. glottis.
Consider a slime mold slug and a colony of Volvox carteri, both of which contain both soma and germ cells. Is a slug or a colony an individual? Explain
What will be an ideal response?