A. Because we have two legs and cockroaches have three pairs of legs, the equivalent action for us would be going from lying to standing. We also have a high center of gravity, and righting or standing becomes more challenging as we age. Despite this similarity, there are many striking differences that affect mobility.
1 On average, the cost of choosing a gender is going to greatly depend on the type used. 2  Sperm sorting, for instance, can cost as little as $1,000 to $3,000 per each attempt, while an IVF can cost at least $12,000 to $25,000 per attempt. There are two common types of gender selection methods: sperm sorting and in vitro fertilization with preimplantation genetic diagnosis. 2  Sperm sorting is a technique that has been used for more than 30 years now.
Elective Gender Selection. In such cases, a child of a specific gender is desired without obvious medical indications. The most frequent indication for such gender selection is family balancing, when one gender is already represented in the family unit and the other gender is desired.