Chap 2&3 Crossword
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Down:
1) An organ connected to the uterine wall and to the fetus by the umbilical cord. The placenta serves as a relay station between mother and fetus for the exchange of nutrients and fetus for the exchange of nutrients and wastes.2) are not expressed when the genes or genes involved have been paired with dominant genes, recessive traits are transmitted to future generations and expressed if they are paired with other recessive genes.4) Twins that derive from a single zygote that has split into two; identical twins, each MZ twin carries the same genetic code.5) A person who carries and transmits characteristics but does not exhibit them6) Having two identical alleles9) contain genes, twisted ladder with sides that are phosphate and sugar, rings are adenine with thymine, AT or cytosine w/ guanine CG10) During the embryonic stage, the organ system grows close to the axis, there is an early growth of the organ system to help the development of the embryo and fetus13) refers to the socially constructed roles, behaviors, activities, and attributes that a given society considers appropriate for men and women.15) From head to tail17) a female sex hormone produced mainly by the ovaries19) a newborn child |
Across:
3) that are expressed that come from a dominant gene7) in the shape of a Y (male) or X (female) that determines the sex of the child8) Twins that derive from two zygotes; fraternal twins11) the branch of biology that studies heredity; a factor of intelligence, activity level, social ability, shyness, anxiety, empathy, effectiveness as a parent, happiness, interest in arts & crafts, also schizophrenia, depression, dependence on nicotine alcohol and other substances.12) 46 & 23 pairs14) A mother usually feels the first fetal movements in the middle of the fourth month, by 29-30 weeks, the mother gets her kicks, and the fetus moves its limbs so vigorously that the mother may complain of being kicked often at 4 a.m., the fetus also turns somersaults, which are clearly felt by the mother. Fetuses show different patterns of prenatal activity, around 5 to 6 months you may feel slow squirming movements, sharp jabbing or kicking movements begin at about the same time and increase in intensity until shortly before birth16) The first three months of pregnancy, by the end of it all major organs have formed, the fingers and toes are fully formed and the eyes can be clearly distinguished, plus the sex of the fetus can be determined visually.18) The form of cell divisions in which each pair of chromosomes’ splits, so that one member of each pair moves to the new cell. As a result, each new cell has 23 chromosomes.20) 25- 35 lbs21) The period of development between conception and the implantation of the embryo22) Fluid within the amniotic sac that suspends and protects the fetus23) From the inner part (or axis) of the body outward |
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