Biology Questions

if you received a dominant allele from your father and a dominant allele from your mother, your genotype for the trait would be

the period of human development that spans from the second week after fertilization until the end of the second month is called

if an individual has one recessive allele and one dominant allele, their genotype is

am individuals genotype is the specific ______ an individual has for a trait

an allele that masks the expression of an alternate form of that same gene is a

during fetal development when is it possible to clearly distinguish a male from a female

what accounts for the largest part of fetal weight gain during the 8th and 9th months of development

During the third through the ninth months after fertilization, a developing human is called a(n)

during human development cells migrate in relation to other cells by a process called

If two eggs are fertilized by two separate sperm, what type of twins will develop?

_______alleles require two copies to be present in order to exert their effect

arrange these stages that form during the first week of human development according to the order in which they occur. Place the earliest stage at the top.

during which stage of the birth process is the afterbirth expelled

the process whereby the embryo embeds within the lining of the uterus is called

Expansion of the first pharyngeal pouch forms the tubotympanic tube/recess, which forms endoderm lining in middle ear cavity, mastoid antrum and auditory/Eustachain tube (part of first pharyngeal pouch)

It is surrounded by neural crest cells forming connective tissue coveringConnective tissue becomes cartilaginous and then ossified to become bony labyrinth of temporal boneThe connective tissue closest to membranous labyrinth degenerates to form perilymphatic space with perilymph (Membranous labyrinth in perilymph within bony labyrinth)

fertilization occurs when sperm and the egg unite to form the first cell of a new individual called the

17. Many mosquito populations today are resistant to pesticides that were historically effective. This pesticideresistance arose in these populations because:A) the pesticides caused mutations in the DNA of mosquitoes that conferred resistance phenotypes, and these werepassed on to subsequent generations.B) some individuals were resistant to the pesticides before they were used, and those mosquitoes were more likelyto survive and reproduce.C) populations had to develop tolerance in order to survive.D) individual mosquitoes built up immunity to the pesticides after exposure.E) mosquitoes from surrounding areas came into the pesticide area.

arrange these structures associated with the mammalian egg from the outermost to the innermost, with the outermost structure at the top

which occurs during embryonic development immediately after fertilization