Suppose the Pair- Rule Genes Were Inactivated in Drosophila Embryos

question 11

Multiple Choice

Suppose the pair- rule genes were inactivated in Drosophila embryos. What is the likely result of the experiment?

• A) The embryos would have missing alternate segments.
• B) The embryos would develop normally.
• C) The embryos would have impaired anterior- posterior polarity.
• D) The embryos would lack several segments.

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Definitions:

Zygote Intrafallopian Transfer

Zygote intrafallopian transfer (ZIFT) is a reproductive technique where a fertilized egg (zygote) is transferred into a woman's fallopian tube to enhance the chances of pregnancy.

Artificial Insemination

a medical procedure involving the deliberate introduction of sperm into a female's cervix or uterine cavity for the purpose of achieving a pregnancy through in vitro fertilization.

Vitro Fertilization

A medical procedure where an egg is fertilized by sperm outside the body, in a laboratory dish.

Menstrual Cycles

The regular natural change that occurs in the female reproductive system that makes pregnancy possible, typically lasting about one month.