Biology ch 11

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One way that meiosis I is different from mitosis is that

meiosis I produces 2 haploid daughter cells, but mitosis produces 2 diploid daughter cells.

What principle states that during gamete formation genes for different traits separate without influencing each other's inheritance?

principle of independent assortment

In the P generation, a tall plant was crossed with a short plant. Short plants reappeared in the F2 generation because

the alleles for both heights segregated when the F1 plants made gametes.

Each pea-plant gamete has how many alleles for the height gene?

1

When you flip a coin, what is the probability that it will come up tails?

1/2

How many different allele combinations would be found in the gametes produced by a pea plant whose genotype was RrYY

2

How many sets of chromosomes are in a diploid cell?

2

If an organism has 16 chromosomes in each of its egg cells, the organism's diploid number is

32

Mitosis results in 2 cells and meiosis results in

4

What is formed at the end of meiosis?

4 genetically different cells

A heterozygous tall pea plant is crossed with a short plant. The probability that an F1 plant will be tall is

50%

If an organism's diploid number is 12, its haploid number is

6

Sister chromatids are separated during ❔❔❔❔❔❔of meiosis.

Anaphase

If a pea plant's alleles for height are tt, what is true of its parents

Both parents contributed a recessive allele.

The top and sides of a pun net square represent

Gametes

An organism's gametes have _ the number of chromosomes found in the organism's body cells.

Half

Unlike mitosis, meiosis results in the formation of

Haploid cells

Crossing over

Homologous chromosomes exchange portions of their chromosomes during meiosis

Organisms that have two identical alleles for a particular trait are said to be

Homozygous

Gametes are produced by the process of

Meiosis

If an organism is heterozygous for a particular gene, the two different alleles will be separated during ❔❔❔❔of meiosis, assuming that no crossing-over has occurred.

Metaphase II

he number of chromosomes in a gamete is represented by the symbol

N

Gametes have

One allele for each gene

When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited

One allele from each parent


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