How can haplotype blocks provide evidence of selective events for a particular allele?
What will be an ideal response?
ANS:
If the allele is found within a large haplotype block, this suggests that selection for that allele has occurred. This is a result of genetic hitchhiking and the lack of recombination between the favored allele and nearby sequences.
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If a fern gametophyte has both male and female gametangia on the same plant, then it _____
A) belongs to a species that is homosporous B) must be diploid C) has lost the need for a sporophyte generation D) has antheridia and archegonia combined into a single sex organ E) is actually not a fern, because fern gametophytes are always either male or female
The term used to describe bacteria that are rod-shaped is
A. vibrio. B. coccobacillus. C. coccus. D. bacillus.
Discuss how photosynthesis is a natural partner for aerobic respiration. What will be an ideal response?
In humans, normal skin pigmentation is influenced by a dominant gene (C) which allows pigmentation
to develop. All individuals who are homozygous for the recessive allele (c) are unable to produce an enzyme needed for melanin formation and are therefore referred to as albino. Two normal parents produce an albino child. What are the chances that the next child will be an albino? What will be an ideal response?