When a Stickleback fish feels threatened, it will flare out its pair of pelvic spines and three dorsal spines, making it difficult for predators to swallow them.
Answer:
javier: i cant do my homework, i have a terrible headache
Explanation:
ive already done it.........
Implantation - About a week after the sperm has fertilized the egg, the fertilized egg has traveled to the uterus and has become a growing cluster of about 100 cells called a blastocyst. The blastocyst then attaches itself to the lining of the uterus (the endometrium). This attachment process is called implantation.
Ovulation - Ovulation is a phase in the menstrual cycle. It occurs at about day 14 of a 28-day menstrual cycle. Specifically, ovulation is the release of the egg (ovum) from a woman's ovary.
Answer:
A heritable trait is one that is determined at least in part by genes passed from parents to offspring.
Explanation:
A heritable trait is the one which is passed from parents to offspring. While environmental factors can still have an effect on such traits, they are at least in part determined by the genes passed on from the parents. They are not always inherited specially if they are recessive.
Heritable traits are passed on through the genetic information stored in germ cells. If a trait is acquired during lifetime of an organism and was not present when the organism was born, such a trait wont be passed on to the next generation and wont come under heritable trait. For example if mice tails are cut for ten generations, the mice born in eleventh generation would still be born with tails.
Well, put simply, biology is the study of life. Everything living is organic (everything living decomposes). Biologists study living things which have organic chemistry.
