Table of Contents
What are the approximate probability that a human offspring will be female?
Human Genetics Study Guide
| Question | Answer |
|---|---|
| In humans, a male has | one X chromosome and one Y chromosome |
| Human females produce egg cells that have | one X chromosome |
| what is the approximate probability that a human offspring will be female? | 50% |
| what percentage of human sperm cells carry an X chromosome? | 50% |
Is XY a normal male?
A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.
Which pair of chromosomes represents a male?
The sex chromosomes are referred to as X and Y, and their combination determines a person’s sex. Typically, human females have two X chromosomes while males possess an XY pairing. This XY sex-determination system is found in most mammals as well as some reptiles and plants.
What can be used to determine whether a person has inherited the normal number of chromosomes?
Results. Karyotype is a test to identify and evaluate the size, shape, and number of chromosomes in a sample of body cells. Results of a karyotype test are usually available within 1 to 2 weeks.
What is illustrated Figure 14 7 quizlet?
What is illustrated in Figure 14-7? have some normal hemoglobin in their red blood cells.
How many chromosomes are present in human male?
46 chromosomes
How many chromosomes do humans have? Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. In fact, each species of plants and animals has a set number of chromosomes.
What can karyotyping detect?
Karyotypes can reveal changes in chromosome number associated with aneuploid conditions, such as trisomy 21 (Down syndrome). Careful analysis of karyotypes can also reveal more subtle structural changes, such as chromosomal deletions, duplications, translocations, or inversions.