Chromosomes
Meiosis
Reproduction
DOMINANCE
&
GENOTYPE AND
PHENOTYPE
&
GENOTYPE AND
PHENOTYPE
mystery???
100
How many chromosomes are there in a typical human?
46
100
Meiosis has some of the same phases as mitosis, True or False?
True. Interphase is the same and the other stages have the same names.
100
In asexual reproduction the daughter cells are _________ to the parent cell
identical
100
An organism's allele pair is known as its ________.
genotype
100
Who is the father of modern genetics?
Gregor Mendel
200
Chromosome 3 from one parent paired with chromosome 3 from the other parent make a __________ pair.
Homologous
200
What is the first stage of meiosis?
Prophase I is the first stage of meiosis.
200
For which type of reproduction (sexual or asexual) is meiosis needed?
sexual
200
The observable characteristics or outward expression of an allele pair is an organism's __________.
phenotype
200
What is this called?
Karyotype
300
How many chromosomes are in a human gamete?
23 (Gametes contain half the required number of chromosomes)
300
When the chromosomes are separated the chromosome number is reduced from what to what?
from 2n to n or diploid to haploid
300
Most advanced organisms reproduce by combining genes from two parents, or ___________?
sexually
300
An organism with 2 of the same alleles for a particular trait has _____________ alleles.
homozygous
300
Mendel's law of segregation states that alleles are inherited ___________ of each other.
independently
400
By the end of meiosis II, what has happened to the original chromosome number?
it has been divided in half
400
During metaphase II of meiosis, the individual chromosomes, which consist of 2 sister chromatids, do what? Tell me with words and draw how they look.
They line up one by one at the cell's equator. xxxxxxxxx
400
What is a benefit to sexual reproduction?
Recombination of genes and genetic diversity of offspring
400
An organism with 2 different alleles for a particular trait has _________________ alleles.
Heterozygous
400
A plant who is homozygous for tall (T) is crossed with a plant that is heterozygous. Show the cross and tell me what percentage of the offspring will be short.
Cross TT with Tt. Get TT, Tt, TT, and Tt. All offspring are tall, none are short.
500
Meiosis produces _______ cells (haploid or diploid).
haploid
500
In metaphase I of meiosis, chromosomes line up along the equatorial plate. Tell me with words and draw how they look.
Chromosomes line up side by side with their homologs. xx
xx
xx
500
Is this individual male or female?
female
500
What do dominant alleles do?
Show in the phenotype
500
Two pea plants that are heterozygous tall are crossed with each other. Show the cross and tell me the genotype ratios of the potential offspring.
Tt x Tt. TT, Tt, Tt, tt
1 TT: 2 Tt: 1 tt