Reproduction Test Flashcards by Chelsi Perkins

Q

Autosome

A

First 22 pairs

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Q

Haploid

A

n

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Q

Somatic cells

A

Normal body tissue cells

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Q

Genotype

A

Genetic makeup, “what you are”

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Q

Mutation

A

Nondisjunction in haploid cells

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Q

Karyotype

A

Arrangement of chromosomes

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Q

Race

A

Geographical gene/trait variation

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Q

Mitosis

A

Division of cells into daughter cells with full sets of chromosomes

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Q

Chromatid

A

strand of DNA

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Q

Centromere

A

connects chromatids

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Q

Cleavage

A

increasing cell number without increasing size

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Q

ICM

A

mass of cells –> fetus

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Q

Corona Radiata

A

layer of follicular cells, surrounds ovum

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Q

Chorion

A

protects embryo

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Q

Graafian follicle

A

mature ovulated ovum

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Q

Trilaminar disc

A

day 7-14, 3 germ layers –> body systems

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Q

Colostrum

A

first milk

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Q

Ectopic

A

egg implants outside uterus

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Q

Breech

A

baby head ^

Q

Cells of leydig

A

produce/secrete testosterone in seminiferous tubules

Q

Seminiferous tubules

A

coil within testes, spermatogenesis

Q

Dartos

A

connective tissue on shaft and scrotum

Q

Meiosis

A

produces sex cells, splits number of chromosomes present in have, 4 gamete cells produced

Q

Sex chromosome

A

23rd pair, xx or xy

Diploid

2n

Sex cels

gametes, DNA shows only mom or dad, n

Chromosome

made of protein and DNA

Allele

dominant/recessive, 2 = trait

Phenotype

what you look like

Inbreeding

incest

Sex-linked trait

hemophilia, color blindness

Heterosis

traits enhanced by mixing parents' genes

Eugenics

controlled breeding

Blastocyst

ICM and trophoblast implanted in uterus

Trophoblast

develops placenta

Zona pellucida

fluid around ovum

Amnion

inner membrane around embryo

Morula

hollow ball of cells

Parturition

birth

Areola

surrounds nipple, helps eject milk

Afterbirth

placenta expelled from body

Glans

penis tip

Tunica

testes covering

Erectile tissue

3 masses, corpus cavernosum and corpus spongiosum

sertoli cells

'nurse cells' in seminiferous tubules

Spermatogonium

1st stage of spermatogenesis

Cremaster muscle

Pulls testes toward body