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2021-05-14

Which was not a result of the 1898 discovery of the four blood types?

Which was not a result of the 1898 discovery of the four blood types?

All blood types made compatible with each other was not a result of the 1898 discovery of the four blood types.

Which blood type would be the most beneficial to have on hand if someone needed a blood transfusion?

O negative

Which inheritance pattern results when parents are crossed?

The inheritance pattern that results when parents are crossed for pure traits and the resulting offspring have traits that appear to blend is called incomplete dominance.

What is pattern of inheritance?

Patterns of Inheritance. The phenotype of an individual is determined by his or her genotype. The genotype is determined by alleles that are received from the individual’s parents (one from Mom and one from Dad). These alleles control if a trait is “dominant” or “recessive”.

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What type of inheritance pattern shows both traits in possible offspring?

CODOMINANCE: 1. In the case of Codominance, Both parental characters will express in F1 organism. Example : red and white spotted skin colour cattle obtained from red and white cattle.

Why pink four o’clock is an example of incomplete dominance?

Wild four-o-clocks tend to have red flowers, while “pure” four-o-clocks with no coloration genes are white. Mixing the two results in pink flowers, just like Dr. Kolreuter’s carnations. Those pink flowers are a result of incomplete dominance.

Why does a roan cow show a codominant pattern of inheritance?

The roan coat color in horses is also an example of codominance. A “red” roan results from the mating of a chestnut parent and a white parent (Figure 2). We know this is codominance because individual hairs are either chestnut or they are white, leading to the red roan overall appearance.

What percentage of the offspring would you expect to have each phenotype?

These percentages are determined based on the fact that each of the 4 offspring boxes in a Punnett square is 25% (1 out of 4). As to phenotypes, 75% will be Y and only 25% will be G. These will be the odds every time a new offspring is conceived by parents with YG genotypes.

Is Green a genotype or phenotype?

Law of Dominance

Homozygous Homozygous
Genotype YY yy
Phenotype yellow green

Is Green a phenotype?

The genetic makeup of an organism is called its genotype and its observable traits are its phenotype. The phenotype of the plants is their color, yellow and green. When Mendel crossed these two plants, all the offspring (F1) were yellow.

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What is a person’s phenotype?

A phenotype is an individual’s observable traits, such as height, eye color, and blood type. The genetic contribution to the phenotype is called the genotype. Some traits are largely determined by the genotype, while other traits are largely determined by environmental factors.

Does phenotype always reflect genotype?

A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism’s parents, the phenotype is not. Whilst a phenotype is influenced the genotype, genotype does not equal phenotype.

How many different gametes can be produced from the YY SS TT genotype?

21. How many different gametes can be produced from the Yy Ss Tt genotype? Write the all out. There is 8 different combinations which are: YST,Yst,YsT,yST,ySt, ysT and yst 22.

How many different gametes can be produced?

Humans have 23 pairs of chromosomes. That means that one person could produce 223 different gametes. In addition, when you calculate the possible combinations that emerge from the pairing of an egg and a sperm, the result is (223)2 possible combinations.

How do you find the number of gametes?

The number of gametes produced by a specific genotype is calculated by the formula 2n, where n= number of heterogeneous alleles present in the genotype. Here, the given genotype consists of two heterogeneous alleles Aa and Bb while CC is homozygous. So, it can produce 22 = 4 types of gametes.

How many gametes can be produced from AaBbCc?

Hints For Biology 101 Exam #4

No. of homologous chromosome pairs (heterozygous genes) No. of different gametes from each parent
2 (AaBb X AaBb) 4 (22)
3 (AaBbCc X AaBbCc) 8 (23)
4 (AaBbCcDd X AaBbCcDd) 16 (24)
20 pairs of chromosomes 1,048,576 (220)
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How many phenotypes can be expressed?

As Table 1 indicates, only four phenotypes result from the six possible ABO genotypes. How does this happen? To understand why this occurs, first note that the A and B alleles code for proteins that exist on the surface of red blood cells; in contrast, the third allele, O, codes for no protein.

How many gametes can be formed from AaBbCcDd?

One type by AABBCCDD & 16 type by individual Aa Bb Cc Dd (24 = 16).

What gametes can be produced by AA?

An individual with the genotype Aa can make two types of gametes: A and a. Since this is a random process, the individual will, on average, make equal numbers of each gamete. (Frequency of 1/2 for each gamete). A second individual with genotype Aa can make two types of gametes: A and a.

How many types of gametes will be produced in female fruit fly?

So, the correct answer is ‘2’.

How many gametes are in a genotype?

The gametes produced by critters with 2 genes. If the genotype is “Aa, Bb”, then 4 different kinds of gametes can be made: (aB, AB, ab, and Ab) A creature with 2 heterozygous genes is called a “dihybrid.”

How many genotypes are possible?

Genotype is also used to refer to the pair of alleles present at a single locus. With alleles ‘A’ and ‘a’ there are three possible genotypes AA, Aa and aa. With three alleles 1, 2, 3 there are six possible genotypes: 11, 12, 13, 22, 23, 33. First we must appreciate that genes do not act in isolation.