What can cause phenotypic mosaicism for X-linked genes in female mammals?
What will be an ideal response?
dosage compensation involving the X chromosome
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Mendel selected pea plants for his experiments because ____
a. the offspring are infertile b. others were also using pea plants for their experiments and this would allow data sharing c. male and female flowers are on separate plants d. they can be self-fertilized or artificially fertilized by hand e. he was told by his superior that only pea plants were suitable for experimentation
What molecule(s) exhibits self-splicing?
A. rRNA B. tRNA C. mRNA D. rRNA and tRNA E. rRNA and mRNA
Matching I. Choose the one most appropriate answer
for each. 1. ___ abortion 2. ___ abstinence 3. ___ coitus 4. ___ douching 5. ___ ejaculation 6. ___ implantation 7. ___ lactation 8. ___ menopause 9. ___ menstruation 10. ___ miscarriage 11. ___ orgasm 12. ___ ovulation 13. ___ tubal ligation 14. ___ vasectomy A. the production and secretion of milk B. sloughing off of endometrium stops permanently C. induced dislodging and removal of an embryo or fetus from the uterus D. an abortion that occurs spontaneously E. the burrowing of the blastocyst into the uterine lining F. the release of an egg from the ovary G. the release of seminal fluid from the male reproductive tract H. a 100-percent-effective method of preventing conception I. a highly unreliable form of birth control J. the periodic elimination of the uterine lining K. characterized by involuntary muscle contractions, release of tension, and warmth L. sexual intercourse M. sperm and egg cannot meet because a section of oviduct is missing N. cutting and tying of vasa deferentia
Why is it necessary to take an interdisciplinary approach to studying biology?
A. Research methods used to solve many biological questions often require a number of different types of approaches and the expertise of a variety of scientists. B. Interdisciplinary approaches are required to answer all scientific questions since all disciplines borrow knowledge from each. C. An interdisciplinary approach is the only way we can further our biological knowledge.