Which type of reproduction is shown in the figure given below? Describe the process in brief.
Answers
Answer:
sexual reproduction
Explanation:
Male rats reach sexual maturity at about 6 to 10 weeks of age; females reach maturity at 8 to 12 weeks. From this age onward, females and males should be housed separately. The average gestation time is 21 to 23 days, and pregnancy is sometimes detectable at about 2 weeks by feeling the abdomen or noticing weight gain or mammary (breast) development. Pregnant females will make a nest, and they should be provided with suitable materials. Tissue paper provides excellent material for nesting.
The usual litter size is 8 to 18 pups. Baby rats are born deaf and blind. The cage should be kept in a quiet place and the litter should not be disturbed for at least 7 days after birth, especially if this is the female’s first litter. Weaning occurs about 21 days after birth. Female rats can quickly become pregnant again after giving birth; however, it is not healthy for a female rat to be both pregnant and nursing a litter. It is recommended that the female be given a rest period of at least 2 months between pregnancies and litter rearing to restore her body to full strength.
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