Which of the Following Statements Is TRUE

question 33

Multiple Choice

Which of the following statements is TRUE?

• A)In general,inversion and translocation heterozygotes are as fertile as organisms whose chromosomes are in the standard arrangement.
• B)Inversions and translocations are without evolutionary significance.
• C)Translocations may be pericentric or paracentric.
• D)Individuals with familial Down syndrome are trisomic and have 47 chromosomes.
• E)Familial Down syndrome is caused by a translocation involving chromosome 21.

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Definitions:

Uterus

A female reproductive organ in which the fertilized egg implants and develops into a fetus.

Endometrium

The mucous membrane lining the interior of the uterus, which thickens during the menstrual cycle in preparation for possible implantation of an embryo.

Uterus

A hollow, pear-shaped organ located in a woman's lower abdomen, between the bladder and the rectum, where fetal development occurs.

Second Trimester

The middle period of pregnancy, usually defined as weeks 13 through 26.