Chapter 14 Flashcards
What was the most significant completion the Gregor Mandel Drew from his experiment with pea plants
Traits are inherited and discrete units and I’m not results of blending
What do we mean when we use the terms mono hybrid cross and dihybrid cross
A dihybrid cross involves organisms that are heterozygous for two characters that are being studied a mono hybrid cross involves organisms that are heterozygous for only one character being studied
How many do you need Gammys could be produced do independent assortment by an individual with the genotype AaBbCCDdEE
8
The individual with genotype AaBbCCDdEE can make many kinds of gametes which of the following is a major reason
Different possible assortment for chromosomes into gametes
Mendel continued some of this experiment into the F2 or f3 generations to
Observe whether or not a recessive trait would reappear
Which of the following statements about independent assortment and segregation is correct
The law of independent assortment requires describing two or more genes relative to one another
A sexually reproducing animal has 2 unlinked genes one for head shape and one for tail length its genotype is HhTt which of the following genotypes is possible in the gamete from this organism
HT
Mendel accounted for the observation that trade had disappeared in the F1 generation reappeared in the F2 generation by proposing that
Traits can be dominant or recessive and the recessive traits where obscured by the dominant one in the F1
The fact that all seven at the Pea plants traits studied by Mendel obeyed the principle of independent assortment most probably indicates which of the following
Anaphase one of meiosis
Mendels second law of independent assortment has its basis in which of the following events of meiosis one
Alignment of tetrads at the equator
Which of the following boxes marked one through four correspond to the plants with dark leaves
1 2 3
Which of the following boxes marked one through four correspond to plants with heterozygous genotype
2 3
Which of the boxes marked one - four correspond to plants that will be true breeding
1 4
Skin color and certain species of fish is inherited via a single gene with four different alleles how many different types of gametes would be possible in the system
4
Why did the F1 offspring of Mendels classic Pea cross always look like one of the two parental varieties
One allele is dominant
Mendel crossed yellow seed and green seed P plants and then allowed the offspring to self pollinate to produce an F2 generation the results were as follows 6022 yellow and 2001 Green be a little for the green seed has what relationship to the allele for the yellow seed
Recessive
Albinism isn’t autosomal not sex linked recessive trait a minute no women are both of normal pigmentation but both have one parent without Bino what is the probability that their first child will be albino
one fourth
Albinism is autosomal recessive trait a minute to limit our birth of normal pigmentation and have one child out of three who is albino what are the genotypes of the albino parents
Both parents must be heterozygous
A black guinea pig cross with the albino guinea pig produce 12 blackouts ring when the albinos cross with the second black animal six black and six albinos were obtained what is the best explanation for this genetic situation
Albino no it’s recessive black is dominant
Gray colors and peas is dominant to white assume that Mendel conducted a series of experiments were plans with gray seeds were crossed a month himself in the following progeny were produced 302 gray and 98 white
A) what is the most probable genotype of each parent
B)based on your answers in a Which genotypic and phenotypic ratio is expected in this progenies
Gg * Gg genotype 1:2:1 phenotypic 3:1
When Mendel crossed the yellow seeded and green seeded all the offspring were yellow and he looked at the F1 yellow seed plant and crossed them to green seeded plant what genotypic Ratio was expected
1:1
Black for in mice B is dominant to Brown for being short tails T are dominant to longtail fraction of the prodigy of Crosses BbTt * BBtt will be expected to have black fur and long tails
1/2
In certain plants tallest on it to short of a heterozygous plant is crossed with the homozygous to plant what is the probability that the offspring will be short
0
In the cross AaBbCc * AaBbCc what is the probability of producing the genotype AABBCC
1/64
