Podcast
Questions and Answers
How many chromosomes are there in the fertilized cell of a horse?
How many chromosomes are there in the fertilized cell of a horse?
What is the primary source of nutrition for developing embryos in chickens?
What is the primary source of nutrition for developing embryos in chickens?
Which organism has the longest development time for a baby?
Which organism has the longest development time for a baby?
What type of fertilization occurs in gerbils?
What type of fertilization occurs in gerbils?
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How many chromosomes do male sperm cells of dogs contain?
How many chromosomes do male sperm cells of dogs contain?
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What is the number of chromosomes in the female egg cell of humans?
What is the number of chromosomes in the female egg cell of humans?
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Which of the following organisms has the least number of chromosomes in a fertilized cell?
Which of the following organisms has the least number of chromosomes in a fertilized cell?
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Which organism's embryo development duration is shorter than 21 days?
Which organism's embryo development duration is shorter than 21 days?
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Study Notes
Animal Reproduction
- Human sperm cells contain 23 chromosomes and human egg cells contain 23 chromosomes. This means a fertilized cell with 46 chromosomes is formed. Human development takes 9 months.
- Chicken sperm cells contain 39 chromosomes and chicken egg cells contain 39 chromosomes, resulting in a fertilized cell with 78 chromosomes. Chicken development takes 21 days and the embryo receives nutrients from the yolk.
- Horses have 16 chromosomes in their sperm cells, 16 chromosomes in their egg cells, and 32 chromosomes in their fertilized cell. Horse development takes 12 months.
- Leaf cutter ants have 15 chromosomes in their sperm cells and 15 chromosomes in their egg cells, which results in 30 chromosomes in their fertilized cells. Leaf cutter ant development takes 14 days and the embryo receives nutrients from the yolk.
- Dogs have 39 chromosomes in their sperm cells, 39 chromosomes in their egg cells, resulting in 78 chromosomes in their fertilized cell. Dog development takes 36 days.
- Gerbils have 24 chromosomes in their sperm cells, 24 chromosomes in their egg cells, resulting in 48 chromosomes in their fertilized cell. Gerbil development takes 19 days.
- Dolphins have 22 chromosomes in their sperm cells, 22 chromosomes in their egg cells, resulting in 44 chromosomes in their fertilized cell. Dolphin development takes 12 months.
- All of the animals mentioned in the table have internal fertilization.
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Description
Test your knowledge about the reproductive systems of various animals, including humans, chickens, horses, leaf cutter ants, and dogs. This quiz covers chromosome count, development periods, and nutrient sources for embryos in these species.
