Yes. Inbreeding will cause fixed wrists, kinky tails, etc.
Do NOT let them mate!
Yeah, they can. So long as you don't breed the brother and sister's duckling to their own brothers and sisters and so on, they won't have any defects
Nothing happens they breed so what they do not know the difference between a brother or a sister it is just another dog.A strong possibility:Litters born to brother & sister dogs have a much higher probability of experiencing (possibly fatal) birth defects. It's not a good idea to allow sibling dogs to mate.
No, because having the same genes from both partners increase the chance of problems such as birth defects and illnesses.
No, he had a twin brother who died at birth.
Elvis never had a sister, only a twin brother who died at birth.
No he did not have any birth defects.
There are thousands of identified birth defects. Birth defects are abnormal developments present at birth that can cause physical or mental disability. Some, but not all are fatal.
fetal alcohol syndrome
Surely they already know, having given birth to the younger brother/sister
him and Kim adopted her when she was born because her mother, Kim's twin sister, dawn, was a drug addict. her birth name is Amanda but Marshall and Kim changed it to Alaina when they adopted her. Alaina has a twin brother, Adam, but when he was born he had multiple birth defects because their mom did drugs while she was pregnant with them.
well, my sister was a twin but my mom lost her brother early on in the second trimester. my sister is a healthy fully functional 31 yr old woman , but she does have a slight chemical embalance that makes her moods change from one extreme to the other unless she takes her medications. i hope this helps a little:)
No; a teratogen is an agent that can cause birth defects.