What are the protein-binding sequences that direct enhancers to interact with the intended promoter and that block communication between enhancers and other promoters?
What will be an ideal response?
insulator sequences
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______________ twins result from a single fertilization event. Fill in the blank(s) with the appropriate word(s). Fill in the blank(s) with the appropriate word(s)
Which of the following methods is least useful for assessing levels of genetic variation in populations?
A) DNA sequencing B) VNTRs C) Protein electrophoresis D) Phenotypic observation E) RFLP analysis
In the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At another gene locus on the same chromosome, there is a dominant gene for red eyes and its recessive allele for purple eyes. A male that was heterozygous at both gene loci was mated with a female that was homozygous for both recessive alleles and the following results were observed among the offspring:Normal wings and red eyes - 420Vestigial wings and red eyes - 80Normal wings and purple eyes - 70Vestigial wings and purple eyes - 430According to these data, what is the distance, in centimorgans, between these 2 gene loci? (Enter the number only without the units. For example, 100 cM would be entered as 100)
Fill in the blank(s) with the appropriate word(s).
Mesophyll cells are primarily responsible for:
A) photosynthesis. B) regulating passage of carbon dioxide into the leaf. C) protection of a leaf. D) transport of water.